i ran for 2 years on stock suspension, and 235/85 BFGoodrich TracEdges (32")
using a little of this:
equaled this:
otherwise, just get an OME kit with matching shocks (HD or MD, doesn't matter) and run 235/85's. if you use spacers, you'll need to relocate your shocks somehow, or buy longer shocks anyway.
the OME kit is tried and true. save the rest of your cash for lockers.