I have GS military wraps with 3" built in. Spring under. I went 4.5" re coils and the truck sits pretty much level so far. I have about 2000 miles in them and no major settling yet. I have loaded them enough to squat the rear of the truck. They will squat about 1-2" and then hold really well with a load.
Overall in am really happy with them. Might swap the fronts for a 3.5" just to gain some rake when empty and help it hold a load closer to level.
Here is the closest comparison I have to loaded and unloaded.