[Duraburb]

Hi guys! Was looking at trying to order up a set of Detroit Steel 8-lug smoothies for my c20 Burb. Was looking at the 20x8 for the fron and was hoping to do their 20x11's for the rear. ANybody have any advice/suggestions on this setup? Backspacing that will work, etc. It's factory 8 lug and will be on air ride . with stock-ish suspension, big c-notch in the rear, factory disc brake front. Thanks for any help!!