OK, here is updated version of my dotmap.
1) As suggested this is good site for pyramids, if you are planning to chop them. Possible lategame powerhouse with watermills, levees and Ironworks. Can also be cottaged for bureaucracy capital (and GL).
2) Another great riverside city. Pigs are enough for growth when floodplains are farmed.
3) Copper city for Colossus. You can't hook copper fast enough other way.
4) My favourite SE smallville. Library can be whipped fast.
5) Horse and marble city. This city really sucks until CS.
6) OK riverside city. Some food for mediocre growth. Levees and biology will change it to a great late game city. Build it late.
7) Nice island city, got the idea from Validators dotmap. It is better to have pigs too, #8 can be pressed more inland. Fast library.
8) Another mediocre city. Better in late game with levees.
9) Plantation city. Will never have much production.
I'm quite sure about cities 1,2,4, and 7. Rest of them are more or less compromises and there is a hole in the western coast. Maybe #6 should be pulled 1E inland to make room for one more coastal city?
Cabert, you asked about why I want to avoid overlap: I think that there is definitely more than enough room, so why build maximum number of cities? City upkeep is going to be high anyway, and 12 cities in this continent is enough for any victory condition. (And some islands are surely settled too.) IMHO it is waste to spam 15+ cities in this land mass.
About next steps:
- Finish MC and build Colossus. It will help you a lot because you are working seafood tiles anyway.
- Don't go for alphabet! It is too late, research Aesthetics instead. You can trade MC for alphabet probably.
- Explore. Find out where AIs are located and block them.
- Settle more cities. Priorize islands which can block AIs from entering your continent.
- I think it is probably too late now for pyramids, so I would prepare for GL instead. And what is the use of pyramids anyway if you plan to use HR? You can trade MC for monarchy too. You need two AIs anyway.