Wheel width/offset help

OK, I have a 93 s10 and Im wanting to put some 6's on the front, and 10s under the rear if they will fit. I am looking to buy a set of billet specialties street lites, but I was wondering if the 10 in.3 1/2 off set wheels will fit the rear with out rubbing? I have no clue if I should go with the 3.5 off set, because I dont want the wheels to stick out way past the quarters. Any help would be much appreciated, thanks.