150 AD on Normal.
Starting position
I want at least 1 good food resource (corn, rice, pigs). Flood Plains are a pro too. I also want at least 3 hills for production. Picking a good start is a huge help.
Research
Agriculture - (Animal Husbandry if you have pigs/cow) - Bronze Working - Iron Working - Mysticism - Meditation - Priesthood - Writing - Code of Laws - - Civil Service - Mathematics - Currency - shut off research
Buildings
All military towns (that's all good towns

) will get a barracks. Some of the early cities will have to get an obelisk to culture pop. Granaries are nice in some cities, but not needed. No other buildings are really needed. Don't bother with courthouses, by the time your economy starts struggling, you don't need to research anyway.
The only wonder I built was Stonehenge. It's cheap, and great for culture.
Civics
I changed to Caste System and Bureaucracy after Civil Service. Bureaucracy means faster production in your capital. Caste System allows you to run artists in all cities. Obelisk (Stonehenge) + Artist (Caste System) means a 2 turn border pop, meaning you'll need less cities.
In both tries, I made war slightly too long, since I had plenty of unclaimed tiles left when I won the game. I started settler production slightly too late.
Oh, and damn you for getting me hooked again, 2 submissions in 2 days after a 4 month hiatus.