I am running the quad shocks with no problems. It is close, but I haven't rubbed in the back once. With people and more weight in the back, I may run into some rubbing, but it doesn't look like that big of a deal.
The only time the front rubs is when turning at full lock and going over a curb, like pulling into my driveway. On a flat surface I have been able to turn completely without any problems.
I got the wheels
here . They were by far the cheapest place I could find and the quality looks to be fine. You can check prices and shipping on their website. The only problem I had was they only sent three center caps, but I called and the fourth is supposed to be on its way.