That sounds.. ambitious. I think that # of spell slots is really going to be a problem. I'd probably eliminate some of the national spells for Ulm/Machaka. I mean, does a single nation really need 15 national spells?
Also, I have already done a bit towards the MA Oceania problem in my
UWGIM mod. If you want to, you can also furhter boost them by giving the EA Oceania summon for Cursed Queens. Feel free to take and edit the changes that mod makes.