First pick a tire size, what kind of wheeling do you do? If it has alot of axle articulation you need to account for that. But if it is a DD and only ocassionaly sees offroad then a smaller lift with a bigger tire should be alright. But then pick a lift for how much room you need to tuck your tires, I'm looking to go with a BDS, 2.5in lift with 32s, but first I need to do something with that under powered 2.5L, I want to swap in something else first to spin the bigger tires and hopefully be able to keep it as a normal DD. But start with a schackle lift, their cheap, easy, and expandable, meaning that when you buy those schackles they'll work with any suspension you decide to run.
DD- 1995 YJ 2.5L, Cat delete, 19lb injectors, 30/9.5r15
Trail Rig- 1994 YJ 4.0L, Rubicon Express 4.5inch lift, 1inch body, D30 Aussie, 33/12.5/r15 Cooper Mud Terrains, front bumper, rocker guards