Another vote for 1" body lift (I like the daystar one that is integrated), 1" motor lift (MORE), 2" budget boost, and Old Man Emu shocks for 2" lift.
The shocks are key, especially with your bad back. My brother in law had OME's on his TJ and it had a smooth ride. Worth the money over cheap white rockets.
That should leave you enough for tires, bumpers, and sliders.