I'd stick with the GP wheels; not that expensive and you maintain the look.
.......
Saying that though; it's not like you're getting rid of the 'old' ones; so It might be nice to have a different set for your track days; I'd go for the OZ 35th's Personally; you keep the silver/black theme and they look amaizing.
I take it you have abandoned the All black R105' Idea?
