i'm not going to get a submission in for this. my first attempt took way too long due to constant wars, and got pretty screwed by a runaway rome taking out 3 civs on the other side of the world, while i was busy in wars with the other 3. i quit around turn 300 due to lack of RAs necessary to clear the last techs
my second attempt was looking really promising, i had four cities up, lots of luxuries, and was on track for legalism around turn 150 when i was dowed by both darius and askia on turn 120ish. darius sent 5 pikes, 1 swordsman and 4 archers and managed to take my second city.
possibly counterintuitively, i think i could have survived if i had signed 2 RAs for education. i was hard beelining it, whereas if you sign the RAs you have to complete various other low level techs to get a decent median; i expect my city would have had another 1 or 2 defense if i had cleared those techs.