"performance" mods are a waste IMO, unless you want some sound. Intakes, TB spacers, etc all a waste for how much it costs vs how much hp you gain.
How much are you willing to spend and cut into the body? Is it awd or 4wd? Need a little more info. If it's stock, start with the minimum items you need to get into the club, recovery points etc. Budget boost are good lifts for cheap money. A 2-3" budget boost, new shocks and some bigger/more aggressive tires will work. See if you can find a rubicon takeoff (rims and tires) set, they'll bolt on and find a lift to make them fit.