OK, played to t50... He completed a wb. It is sitting in the capital. Capital is now 40% culture...
We can hit it now with 3 units... HIt it next turn with 4, or in two turns with 5.
If we hit it now, we kill the wb. If we hit it next turn, wb is out, but probably not netting anything yet. In two turns, likely it will have netted something (how useful that is with the barb triem is questionble.)
With 40% culture, our first chariot, before promotion, has only 2% win chance, and about 10 % survival chance....
Again, I suck at war... My instinct is to wait until we have at least 4, and maybe even 5 chariots, but my instinct is worth very little, so I will follow advice here...