A 4" lift is pretty tricky with 4wd. The only quality fabricators that im familiar with that provide around 4" is Total Chaos. They use a half axle from a T100 which allows 12" of wheel travel. There a bit over a grand but its your next best option besides a solid axle swap.
If you arent doing any serious off roading and want to save some cash. The Superlifts will give you enough clearance for the 35's but can be very unstable since they just lower the front diff and stock suspension. With a raised center of gravity and no gain of wheel travel/articulation up front and lots in the rear, things can get pretty tipsy, especially with a body lift.
Hope this helps
Total Chaos Suspension
Total Chaos
Superlift