We must have Monarchy before Lit, and here is why:
In despot, it will take 9-12 turns to discover techs, in Mon, 5-7 turns.
We could have mon and lit in the same time as it would take to get lit
before Mon, a bad trade.
The next target is trade, if we want any wonders before the AI, caravans are the way to get them.
Only
after trade should phil be researched.
Also, we will need military techs, and going straight to phil will mean a delay getting to fued and Montheism, and REAL game winning combo.
Great Library is good for filling in some techs, but it can destroy our research rate (to many techs makes the beaker cost rise to quickly), and who cares if the AI has it? In that case, we can take it in a military campaign with our Crusaders/Dragoons or destroy the city it's in.
Mic's and Sun Tzu's are worth FAR more than Pyramids (a useless wonder, really) and Hanging Gardens.
The Collosus is vital to strong tech research also, much better than ANY other early wonder in usefulness, and will last till flight!
With Pikeman and Crusaders, the AI is in serious trouble, than hopping to invention for Leo's (another crucial wonder we MUST have, IMO) and than Gunpowder and Leadership means we will have Muskteers and Dragoons while the AI is still messing with Phalanxs!
Also bare in mind, we may be on a small island and may need Mapmaking to expand, which is why we must explore
quickly!