Sounds alright mate but depends on how you have had it set up. The other thing i would do is the rear beam for a ZOO grp A copy. thats whats next for mine.

As for R888'2 on a Saph i am not sure but alot of other people are using them with good results, if only using the car for summer and track days them your not to worried about the wet.

Alot of people are using the Dunlop trackday/fast road tyre thats supposed to be very good aswell, comes down to personal choice and what your budget is.