Would say if you know Rich at KW then your decision is made really, as he can not only sort you a deal ( save some money for other parts ) but help with set up and advise all through the project
Clubsports are good, need to understand the differing set up , bump and rebound etc to get the best as there not combined in one adjustment like the intrax.
18' seems to be obvious choice for lots of track due to cost of rubber etc, not sure on best sizes as always run 19" on both sets with cups, but would probably go 18 if if go again with some other rims
Good luck with the project
