If you don't off road much, what makes you want to lift it more if its fine where it's at? There's a lot that goes into a lift kit that will work how it should. 3" lift on 32s is a capable rig if you play every once in a while. With your set up, you don't really need to do anything else to your rig, but with bigger suspension and tires, your geometry goes out of wack and there comes driveshafts, brake lines, etc. Also, the bigger tires adds more stress on the stock axles and your mpg. If your wanting more out of your rig, throw a locker in one of your axles and that will allow you to explore a lot more , without suffering performance or added wear.