The "universal" info on the forum is good for caster correction tech, etc, but some lift/tire info doesn't work well in our terrain. Seek local info before spending your $$$, talk to some of the locals that wheel, Maddbaggins, GeoRoss, Shotts, etc and/or spend a day on the trail with them.
If you come to a PHX CSC meet you will see that the most common setup is J's+ springs and 315's+ tires with good reason. Most of the trails in AZ are in and out of washes and the best time to tour them is shortly after a rain. In those conditions the wash edges get undercut and sand scoured out around the rocks making for lots of steps to slide off and climb. A little larger tire and more clearance under the truck, makes life much easier.
You will see lots of A/T tires, they work very well in our sandy terrain and loads of Nitto's, they have proven to work well in the desert, never seen one cut on the trail and ride well on the highway.
Seen it way too many times, a newbie gets a truck reads the forum, puts on the 2.5" and 285's. Wheels it and shortly gets tired of dragging the underside over everything and has nice sets of slightly used springs and tires to sell to finance the "upgrade"!
My minimum setup for back roads AZ touring is heavy rears with L shocks, J fronts and 315's.