First I'd suggest -not- "correcting" the rear wheels. It's purely cosmetic. In fact, it makes the wheelbase longer, which you don't want (albeit by a small enough amount it probably won't hurt). Further, it requires replacing both the upper and lower arms, and the uppers are just fine stock and a bitch to change out.
Plus, it potentially introduces driveshaft length issues.
Just replace the lowers, in stock size. BMRs on a budget, Global West if you want the best.
To start though, unless you have something broken, do the body bushings... it's cheap and you can do it yourself in half an hour without a jack or anything.