Sisiutil, about the things you said you had trouble with, I suggest:
1. especially in this game, with this happy cap, work food tiles, grow, and be patient.
2. build fewer buildings and more units, but build Heroic Epic ASAP.
I played a shadow version of the last round to illustrate my advice.
Sisiutil 65 AD - 725 AD
settle Ivory city and Fishing village
Construction - Philo (lightbulb) - HBR (for CoL) - Theo (for MC+Lit) - MC - CS - Machinery - Feud (for Philo) - Paper (lightbulb) - working on Guilds
Persepolis size 7 -> 11: Forge, Monastery
Pasagarde: 5 -> 6: Granary, Forge, Stable
Goth 6 ->11: Granary, Forge, Barracks, (Market)
Beijing 7 ->11: Forge, Stable, Monastery, (Market)
Guangzhou 6 -> 7: Forge, Barracks
Shanghai 5 -> 9: Granary, Forge, Barracks
Susa 1 -> 3: Library, (Granary)
Ecbatana 0 -> 4: Barracks
Arbela 0 -> 1
12 worker, 14 Immortal, 1 Warrior, 3 Spear, 3 Axe, 1 Trireme
1 XBow, 1 LBow, 3 Elephant, 2 Cat
pop 63
110 commerce
100 beakers at +8 GPT
111 hammers per turn
GPP:
popped 2 scientists
Persepolis 15 + 17
Pasagardae 48 + 3
Goth 27 + 3
Beijing 366 + 6
Guangzhou 309 + 9
Shanghai 12 + 3
Jet 65 AD - 725 AD
settle Ivory city only (on a different tile; didn't need elephants right away)
MC - Construction - Philo (lightbulb) - HBR (for CoL) - Machinery - Engineering - CS - Paper (Lightbulb) - working on Nationalism
Persepolis size 7 -> 14: Forge, National Epic, (Market)
Pasagarde 5 -> 8: Granary
Goth 6 -> 13: Granary, Barracks
Beijing 7 -> 11: Monastery (completed), Forge, Heroic Epic
Guangzhou 6 -> 11: Barracks
Shanghai 5 -> 13: Granary, Barracks, Stable
Susa 1 -> 3: Library, Granary, (Barracks)
Ecbatana 0 -> 4: Library, Granary, Barracks
11 worker, 14 Immortal, 1 Warrior, 2 Spear, 2 Axe, 2 Sword, 1 Trireme
6 XBow, 2 Elephant, 5 Cat, 4 Treb
I built enough units to declare war, but I didn't do it because I was lazy and because it would have made the shadow less comparable.
pop 77
191 commerce
140 beakers at +8 GPT
78 hammers per turn
GPP:
popped 2 scientists
Persepolis 131 + 30
Guangzhou 231 + 6
Beijing 280 + 4
Goth 42 + 6
what I did:
Carefully stayed on higher food tiles, checking every turn. Many were cottages because I got Civil Service late. I deliberately worked cottages in the capital for Bureaucracy, but I think farms in the capital and Caste System would have been fine instead.
Built more units:
* Only 2 Forges: 1 in Heroic Epic city and 1 in Bureacracy + National Epic city
* Only 1 Market: low priority building in Bureaucracy + National Epic city
* Only 1 Stable (city specialization)
* Built Heroic Epic (with Marble!). HE should always be built promptly!
* Chopped a little more than you. My only deliberate chopping was Libraries in the new cities, for the culture. Otherwise I was clearing cottages and farms.
* I spent the first 5 - 10 turns whipping buildings, but after that I just grew.
Speaking of fewer buildings, I think Pasagardae and probably Shanghai and Beijing would have been better without the Libraries. If the map had had less commerce on it, then those cities might have needed to run scientists to get through Code of Laws etc, but as things turned out, they seem better growing and building units.
Specialists:
* built National Epic (no excuse not to build it if you have Marble!)
* kept 2 scientists in Pasagardae and Guangzhou.
* kept only 1 scientist in Beijing. Fired 1 scientist to leverage Heroic Epic better, but kept 1 scientist to get a return on the GPPs that had been invested so far. Switched him to an engineer when it looked like I wouldn't get the great scientist in time for Education.
* No specialists anywhere else except Goth (high food), and there, started them late. Grew first.
Didn't build monasteries (well, I finished the one in Beijing), trade for Theocracy, or switch to OR. Didn't try to make religion strategic.