Marks 2 cents.
Bilstien shocks with lowered king springs, around $1500 for a set if I recall, better than cheap spec coilovers which are to hard for the street, my car handles better on the street and on the track now compared to my old multi adjustable G4 coilovers.
Thow in a HICAS lock bar, some good brake pads and tyres and your on your way.
Rims size would be to suit the best rubber you can afford, and if you dont have too aggressive camber they should last a while.