I feel you'll have pretty bad contac even with the RC kit. AZpro4x showed me his RCuca's last year and they still were banging all on his coilbuckets like the stockers. 5" of lift on a stock spindle is impressive though, lucky 2wd. You gonna throw a block in the back to level it out?
The more I read on the forums, the more I am leaning towards the really stiff Pro4x coils with the sway bar removed. It looks like stock Pro4X's and 2WD that upgrade to the Pro4x coils sit at about 38". If I had my Bilstein's set at 0 and picked up a 1.5" spacer, I would sit at 40".
I measured my rear again last night, and it is actually sitting at 38" right now. The most I would throw on back there is a 1.5" block.
My old truck sat 41.5" front and 42.5" rear.