All you need is a 1-1.25" body lift, and any spring lift of 2-4" to clear 35's.
If its an auto, you want to re gear to 5.13's.
If its a 6 speed, you can live without re gearing.
If you get an RE kit, you want the 4.5 kit, with 3.5 springs.
RE 4.5" are to tall, and really to much height for a rubicon drivline to be really functional, unless yours is an LJ.