My car doesn't rub at all. The PS4S are stock size. I run 10mm front and 17.5mm rear spacers.
With that low of mileage you *shouldn't* have any issues, but its hard to say. ShopDap sells a kit just for the replacement bolts, as most of them stretch and should be replaced.
Also, Clem's pic after his car was wrapped is what made me pull the trigger on this setup. At first I was a little disappointed, as it seemed like it didn't lower a noticeable amount, but they really only lower 5/8" or so. After a few weeks of driving and some twisty roads everything settled in and now I am very happy.