Hi I just tried out this mod and it's pretty enjoyable to get alot of use out of the units and not have to deal with huge build times so thanks alot.
Have you also changed the values for social policies too? I was worried about this so I turned cultural victory off
I'm glad you are enjoying the mod, I am really really happy with it and am having an absolute ball playing the game
I made numerous changes to accommodate for the longer eras, such as lowering unit upkeep inflation (as you will be playing far more turns), I increased the production cost of buildings and reduced the effectiveness of science buildings and research agreements, however I lowered the maintenance costs to science buildings to compensate and keep them desirable to build.
In terms of social policies, I purposely kept them the same for two reasons -
1) I didn't want to make the game feel slow and boring, I wanted to maintain the influx for "bonuses" coming in at reasonably high frequency, that's why I didn't increase unit costs and only slightly increased building costs.
2) Social policies exponentially increase in cost, so it would be extremely uncommon to "max it out" even with the extended eras.
So yes, you should probably turn off cultural victories if you want a full game and chance at victory (although you can just let it stay on and continue playing after the game ends, which is what I do).