Looked at save. OK, we have some Horses. Rome still backward, it was a glich, Rat. Even Persia do not have Mono. They glad to take it for peace, sure. They can make peace for 160 gold also. Trade Invention for Mono costs 700 gold, but may be it is an option? Now critical moment, to "renegotiate peace treaty with Sumeria. If I leave situation as it is they pop up IBT, without "options". But I do not see a reason to stop France -sumerian war. We will ask 11 gpt in this treaty and, probably then they will break it (hopefully). But I had a game when England stay 46 turns at war with only one London in 20 turns against "superpower" Hitties. So, if there is no objections I continue to stay in wars "as it is". And start uni prebuild "now."
EDIT nobody reply, so I better wait. But plans become mere "solid".
1) At pre-turn re-negotiate trade with Sumeria. The fact that thej have more and more gold indicates, that they are fight with France and have less and less units. I think it is good for us. Bring them also to alliance vs Persia.
2) Do not trade techs. The longer we will have monopoly on Astronomy the better. It is "not good" to pay 700 +Mono for Invention, also it is not good to give up of monopoly to Theology.
3) Prebuild Unis.
4) Pump Workers from "irrigate" and make Cities "approximately equal. Do not improve bad tiles.