I've had a mother 32 for about a week with not much chance to play yet

Spend more time with the mother, naturally you will hit limitations like not enough vca's or mixers or attenuators etc...
just buy what you are missing and let your rig evolve on its own module for module is usually the best advice anyone can give you, just listen to your rack it will tell you what it needs.

I don't know how you will play the thing

his mother32 has everything on board
but research the mothers quirks to not get suprised by buggy behaviour. it has some weird things going on like no proper grounding and other quirks that are nice to know beforehand so you dont run into trouble.