I'm fairly confident I've got the army composition correct, also the recruitment. I get the "proper" infantry and cavalry, like Klerouchi and Pezhetairoi and the heavy cavalry from the "proper" Greek colonies like Antioch and Seleukia and I get Jewish spearmen and slingers and light cavalry and Persian archers and stuff from the other provinces, but the things I'm unsure of is:

Should I make Seleukia the capital to make the eastern provinces more stable, or would it be more realistic to leave the capital at Antioch and let the eastern provinces rebel and then recapture them? That seems to be how it really was when reading the history of Arche Seleukia.

Also government types. How realistic is it to make Babylon a type 1, rather than leaving it as an ally? How realistic is it to make some of the type 3 governments (like Mazaka in Asia Minor) in to type 2 or even 1?

That's all for now. Thanks in advance.