I had a set of rims made for me by CCW (John & Chip).
I am in the process of getting a custom body kit from ACP. John at CCW recommended that I go with a Viper set-up. (F) 19 x 11 (305's) and the (R) 20 x 12.5 (335's) Michelin PS2.
Tell John about your kit and he will make offset to push wheel out by making a thicker center hub section.