Thinking about finally getting spacers. I don't have any plans to ever lower the car due to Vermont's poor road/dirt roads. I'm looking to push the wheels out a bit but nothing too extreme. I have two sets of wheels, double 5-spoke 17" aero alu50 with 235/45/17 tires that have an et of 41 and a set of rk2's on 225/45/17 tires with an et of 35. I was thinking putting 12mmm hub centrics up front and 18mm hub centrics on the rear. This I thought this would help with pushing it out as well as accommodate the two rims offset depending what's on the car as to still keep it from rubbing...helping with looks but still keeping safety. Figured I'd need 39mm lugs for the front and 43mm for the rear. Thoughts?