If you purchase the things I laid out, plus your gear kit, you'll be set with the rear. The kit from Revolution takes care of the 30 spline axles and new wheel bearings with seals.
https://www.revolutiongear.com/prod..._tj_cherokee_xj_30_spline_upgrade_super35_kit I suggest you get in touch with West Coast Differential about a 30 spline locker and bearings/races/shims. After that the only things left are the gears, pinion bearings and seals.
Edit; there was one part that I had to find, and it was more difficult that it should have been. Eaton's instructions say Dana 35 C-clips came in two thicknesses, but the E-locker has to have the thinner one. My factory 35 C-clips were the thicker set, so I had to source some from the parts stores, which was very difficult. I wound up using Dorman part #5311