No mapmaking available now, you can see from the trade options screen above. Some AIs will have had 12 turns to research into mapmaking. It should be available soon I would think.
I dont know how soon they will research out of the AA. India has a river by their capital, and a freshwater lake by their second city, so they can surely achieve 40 beakers or so at some point. That gives them lots of research right now. If we assume, 20 turns for construction for them (counting on them to start on maps at least before they trade it from us or another AI), then we conceivably could be out of the AA at that time. I do not think the other AI will have CoL and Poly at that time though. With 30 civs, some may do CoL quick (Persia I have seen before do this) but their choices are still a mystery. The Ottomans and Sumeria love polytheism to get to Monarchy, but with no government available there I dont know what they will do. If it is hardcoded into the AI it will not matter, they will research it regardless right? I noticed DaveMcW thinks it is hardcoded at the end of this article:
http://forums.civfanatics.com/showthread.php?t=45559&page=3. In my experience commercial civs value Currency more (Korea always seems to like it) so India may just research Currency themselves.
What adds more science, library or conquering towns? We are in Feudalism so conquering doesnt add as much as if we are in a republic. In size 7 and up cities though, we can add scientists to lit research (or whatever research) to replace the unhappies. Or they can riot while we have free scientists with no starvation. We also get units support from conquering.
I really dont know, the AI is unpredictable. I still think we should take currency and pay the greedy Indian, but lit is not a bad option either. Even if we research Currency, we may still not be in the MA, so we can stop research. If we do research currency we can trade for HBR now or soon. It doesnt matter really when we get to MAs, it matters in finding the scientific civs and at least making a play for the free tech. We are at turn 38 so 20 turns from now we would be 4 turns or so from lit, at 1550 BC. If an AI is in the MA then that is ok, we dont have to be first. 10 turns from then we are at 1300 bc with 300 gold or so in the kitty.
We can also trade spices I suppose with a harbor with India, and maybe gems with Egypt. We can be running 0 lux quite soon, as long as wars do not break our trade routes, which we should be wary of. Im rambling now, we probably need to have some consensus or a noble soul to sum up the discussions.
Edit: After some thinking, the library only adds 10 science (to 39 bpt). Our current configuration at 10% lux (26 commerce-3 for lux= 23) gives 29 science with the 2 scientists. So our return on library investment is actually lower than calculated.