I had a 3" body lift and a 3" toytec lift, under 400 bucks total. Thus you can get 6"s and it WILL be cheap.
I ran 33" tires and it was fine for offroading, infact I would prefer even a slightly higher lift in the front. With that lift adn tire size you can fully stuff in the rear WITHOUT cutting anything. The front MAY rub as it did in my case on the pinch weld even with beating the hell outa it.
If you run a 35" tire with CVs prepare to change them, its a fact 33" tires are ok but some people break them, as I di (2 on the trail and a number of boots on the street). In addition to that with 35" tires with 6" of lift you will need to cut for clearance on your truck.