The price of having 400cgs. We can always make our music file smaller
But otherwise
Expect Tianhehui to be giant in size.
I reckon you might be able to lower it's size by converting the sprites/cgs into webp files, if that is top priority, since it will take a lot of effort to convert everything, principally on such a big game, so it might not be worth the effort, but if you're worried that the final product, considering the game right now already is huge, would have too much size, it would probably be better to start now sooner than later