Doesn't matter too much at this point
i'd spend 100 on a lesson, 50 on a helmet and 30 on wrist guards so you don't break your wrists again
Would be a good start.
bindings uhhh try to find a deal on like flux tt30s or something.
Boots, just try everything on in the store, i'd spend the most on boots/bindings for sure.
No board is going to significantly help you from catching edges, that's more technique and getting your body perpendicular to the hill and using your front edge to initiate the turn.