I recently lifted my 86 CJ7 4 inches. I went with the Pro Comp, with 33 inch Super Swampers. It came with everything you need, but the extended brake lines and bump stops. There are some smoother riding kits out there, but for the money it's a good deal. If you go through 4 wheel parts, you can also get free shipping. You can also keep a look out, you can find others running free shipping specials.
1986 Renegade CJ7, 258 straight 6, 4 inch Pro Comp lift, 33 inch Super Swampers (TSL Radial), Double Trail Master steering stabilizer, cool set of aircraft seat restraints.