4.5" will get you going for sure. i've got a 4.5" Rub Exp lift and my 32s rubbed slightly. Trimmed a bit and there all good. A few other things to keep in mind - you need good tires, they're worth every penny. And you'll need new shocks to go with the lift; they can be bought separately or with a kit, just keep it in mind. Brake lines are nice extras with kits. As are upper control arms; the stamped OEM ones aren't very stiff. Have fun and post some pics.