i would test fit any wheels before buyin it, there are a buttload of issues... clearing the fender, if its a wider wheel it can hit the tie-rod, test fit em.
If you change your mind and want 20s, I have a brand new set of Boss 304 w/a +15 offset in a 5x5 pattern. The 255/35/20 tires are also new. Just call me at 513-315-7494