Techs: Wfyabta is getting really interesting!

ASAP after Isa came out of her wfyabta I started trading again. Since I figured that I would lose the run to Lib anyhow, I thought I could trade paper to the others. And I would like to have as many trades done as possible before the other continent discovers us (I somehow doubt that we will discover them...).
So I traded:
2nd turn: Paper+Lit for Feudalism (with JC) and Paper for Metal Casting (With Saladin)
3rd turn: I waited since Isa wanted Feudalism and Philo for Machinery only (that was too much I thought)
4th turn: Traded Feudalism+Philo+5 to Isa for Machinery+Compass
And afterwards Isa was still not in wfyabta-mood (although at the top - or maybe second - at that stage).
Later, I traded paper to her for currency (I can't believe, I forgot to get it earlier...

These additional trade routes would have helped me quite a bit...)
Even though, I was skeptical at first, I seem to have made it to Lib in time. In 780, I was one turn from Lib.:
However, I would like to take astro for free to start some overseas trades. Thus, I switched to optics. Hopefully, I am able to make it...
Cities&Buildings: NE in Athens - I had the same problem as Flo7. I didn't dare to switch to a religion, so I took the NE as a "substitute". I whipped a bit in my cities to get more infrastructure on line.
In the beginning of the turnset I focused on my defenses (walls, units), especially close to my borders. Lateron, I turned to courthouses and universities to increase my research speed which is still slow.
Barbs: Very early during this turn I destroyed the Barb city in the north. I wanted to avoid that Isabella's units (that move around through my lands) capture it and I wanted to locate my own cities on different spots.
Other Civs: Isa demanded that I stop trading with the Romans. I rejected that. Only a few turns later Saladin DOWed Isa. And another two or so turns later JC DOWed Isa, as well.
The map as of 800 AD:
Plans: I would like to settle the remaining part of the continent and start trading overseas. Before, however, I would like to trade as much as possible on my own continent - JC has just switched to Merc.