do not run positive camber in the rears. It'll mean when you corner your rear wheels will have minimal contact with the surface. your car is already snap oversteering inclined cos all your weight is on the rear, guess what happens when you have no grip as well in the rear?
10mm/15mm bolt on spacer. then STFU, get your balls in a bunch and roll your guards. do it or I will punch you in your sandy, fickle, good advice ignoring vagina. yes, this justaposition implies you're a hermaphrodite. deal w/ it.
Or cut your losses, sell the wheels and actually buy ones that will fit instead of ghettoing it up, and getting cheap shit on a whim that it may fit.