I have been wheeling for a while and I am happy to help folks starting out.
In my humble opinion for the 100 series I would add the following and in this order:
- Good tires, the 285/75-16 or whatever a 33" x 11ish tire works out for your size wheel. Buy 5 and start rotating. Start with an All Terrain tire, the BFG KO2's are king in my humble opinion.
- Buy some solid recovery points from Trail Tailor or similar. Have at least one good recovery RATED recovery point front and rear.
- Buy a quality recovery kit with a strap, tree saver, soft shackles, hitch recovery point, gloves etc. ARB and Warn make great kits.
- Adjust your torsion bars up a bit (tons of threads on how to do this safely) and add a 30mm spacer to the rear springs. It'll give you a 1" lift or so.
- Add sliders. Again not steps, you want weight bearing sliders.
- Get a quality air down/up system. Off road there is no better bang for the buck then getting your tire pressure correct for the conditions.
- Join a local TLCA club and get out on your local trails.
Go out and get stuck, you'll know what you "need" soon enough.