Man I hope you can get this figured out. You've got on sweet Cobra!
I've been looking at TF Mach-5 or Chicane 18x10.5 with R888s. I do not want to roll my fenders, so I'm thinking about going with AFS reps instead.
Last two times I've taken the car out it hasn't rubbed. I rolled the passenger side fender nearly flush. I have some afs wheels on order for a second set of wheels. I'll still keep my tf wheels to.