This is what I do with the Angkor Wat Wonder... I play with Spain Isabella, she's generally the best leader to play with using Angkor Wat.
Depending on whether your capital has a reasonable Food surplus to support Lots of Priest. I'll go for the PP City (Priest Production) Found One or Two of the early Religions in your Capital. I Personally Prefer Two Religions, others May Say that's to much and the Extra Priest Assignment available from Shrines will be wasted because you don't have enough food surplus or health to support them. One Holy Religion in your capital will generally be enough. Going for three Religions is definitely going over the top because you ignore Worker techs and prevents you expanding the AI's are taking the best City spots away from you. In most games I say you shouldn't go for 3 Religions in your capital unless you're playing the Hydra Game... (3 Headed Hydra or more.)
Isabella is the best bet to get an early religon even on higher levels, under certain circumstances where she is near the coast or lake tiles because she starts with the techs fishing and Myst... so she can work those lake and coastal tile for early commerce and she can research a religious tech immediately. Isabella's Trait's ideal for this strategy too, Spiritual Means cheap temples so you can build them and assign more Priest Easily and Expansive means Extra health to allow you to assign more Priest Happiness isn't an Issue becuase by the time your Angkor Wat is up you should have Calander Resource hooked up or at the very least have the Monarchy Civic help you.
You should farm your Capital and grow your Pop there as quick and as possible, Don't Pass the health Cap. You should have this Military PP City up and running around the time Maces appear. Remember to Pop a GS to Light early Philosophy to have a head start on Angkor Wat. There's also the option to Oracle Slignshot to Philosophy if you choose to risk it
Once you have everything Sorted around the middles ages when Maces Appear, Your city should be something like this... all Farmable tiles should be farmed except obviously hills and forest Plains Tiles, Try to Keep Forested Plains tiles in sets of 2 for the health benefits, you don't benefit much from plains tiles when farmed until biology, their better off left alone untill replacable parts when you can build lumber mills for extra hammers.
You should have a base production of a minimum 20H or higher
You should have the following buildings in your capital
Health Buildings eg- Ganary, Aquaduct, Habour (If you've research Compass and your capital is near the coast)
Heroic Epic= + 100% Production on Military Units (remember to have a level 4 unit)
Forge = +25% Production
& Run the Civic Bureaucracy which gives you another +50% on production.
Assuming you've have a base production of 20H, The City should be producing units at 20*2.75 =55H a turn, that's any unit in the middle Ages every 2nd turn and that still doesn't include overflow.
Plus you have the Military advantage in the Middle Ages as you are Spain with your UU and UB, You'll over run your AI neighbours with the Mass production your units.
All Great Prophets, apart from the first couple that build shrines will become SUPER SPECIALIST in your Capital as they give you an extra 2H, and don't obsolete from computers tech, they don't benefit from the 1H from Angkor Wat either.
You can still use the PP City as to mass produce all the way into the modern age... theoratically... althought I have not played that far.
Basically after beelining to your UU and UB, the next techs to beeline are
Education - For the Military Academy and +50%
Consitution (optional) - For Representation for extra Breakers from Specialist it definitely helps you beeline to those important techs quicker
Steel - Ironworks - For another + 100% on production
Biology - Give + 1 Food to farms
At this Point in the game you should have a minimum base production of 30H or more from, higher helath and happy caps allowing you to work more farms and assigning more Priest meaning more hammers plus Great Prophets you assign as Super Priest.
This is assumed you ahev a Base Production of 30H
30*4.25= 127.5H SO around 127H
(Heoric Epic + Forge + Bureaucracy + Military Academy + Ironworks)
If you decide to War into the modern Age
Communism - For State Property, Computers isn't very Far from being researched at this point which will obsolete Angkor Wat (You can ignore the tech computers if you choose too) but most of the time I'd say the State Property Production City will be more powerful then a PP City at this point in time so convert all your farms to Watermills and Workshops. Remember you still keep the Hammers from the Super Priest Great Prophets as Angkor Wat Doesn't affect them.
Research any relevant techs for Factories and Powerplants etc...
This is a Warmonger Strategy Based solely upon, Mass producing units and beating your AI opponents with numbers.
You could argue that I Lose out on the +50% Commerce when running Bureaucracy. This is basically a choice really, which Oppotunity Cost is greater?
Extra Research and Gold from +50 Commerce? or Buiild more units that will allow you to conquer more cities from the AI which the new Cities will Produce the Research (Breakers) and Gold for you?
Maintainance Cost? The Shrine Income from your Holy Religion in City In your Capital should cover that.
Remember to Have your 2nd or 3rd City as a Commerce site to at least keep up in research with the AI in the Early and middles ages before you start Conquering.
NOTE: I've already be over "The Founding Religion for Shrines OR Speard Religion with Missionaries and build Cathedrals For Priest Specialist Debate on another thread so if you want to bring this up, I'm not gonna reply, it's really up your choice upon which decision is better
Btw
Temples cost 80H
Cathedrals cost 300H
on a standard map you require 3 temples to build a Cathedal of one religion
then there's also the cost of building a Missionary (40H) and the chance that it could fail in spearding Religion to that city.
And Possibly the cost of a Monastery 60H, if you decide not you run Organised Religion Civic
The Arguement is If I don't found any Religions and go the Cathedral route, instead of using those 1st couple of Great Prophets for shrines I can use them as Super Specialist and recover the lost hammers used for Temples and Cathedrals in "So Many" Number of turns.
But It doesn't take in consideration of the Time Factor, If you could recover those hammers earlier from building religious buildings, You could potentially use them on military and potentially capture a city or even eliminate a civ making you you one step closer to Victory but that's too difficult to claculate as part of our oppotunity cost
But on the other Side there's the risk you could lose out on founding an early Religion and also the cost of not having worker techs early enough or expanding early before the AI takes the best locations on the map.
Both Choices have their Pros and Cons. It's up to you which you think is the better choice, you can debate this among yourselves, I'm not getting invloved.
NOTE: Cathedrals are cheaper if you have the right resource. eg- marble,stone copper, depends on what resource the Cathedral is made up of for that religion
This is Long I Wonder if I missed something???
Anywayz Sorry for any Gammar or Spelling mistakes
Enjoy the Tips