kieran sti 2

Hi, I have brembos on my classic with newage wrx wheels, I'm looking to get a new set but not sure what's going to fit.
I have been offered some oz superleggeras that are 17x7.5 et53. Does anyone know if they will fit? I think the offset needs to be lower?
Another set I can get are a set of the 18inch prodrive p1 ones, not sure on the size of them but I'm sure Iv seen big calipers under them before.
The oz superleggeras are a lot cheaper so ideally I would like it if they fit!
Thanks