OME, BDS, RCD, Currie, Clayton Off-road and AEV would be good places to look for lifts & springs.
You may need new shocks depending on the extended and collapsed length of the RE's. You'll need bumpstops extensions front and rear as dictated by the shocks. Brake lines would be good, front and rear sway bar links, a double cardan rear driveshaft might be necessary, adjustable control arms to dial in pinion angle & caster, brake and steering upgrades for the larger tires, adjustable track bars and/or track bar relocation bracket in rear. Basically just buy a kit with everything already in it and sell the BB.