As the other guy in the chapter with WJ, I would say go with a ZJ setup especially for what you use it for. I wouldn't have gone WJ if I didn't need new hubs and brakes as well. I also got all the "junkyard parts" for $40.
Yes but I don't know how much because I went from whatever was on the front when I bought it and cheapest pads and rotors for the ZJ rear to black magic all around.
Learned that trick the hard way too, there is an art to rotating and intsalling it for the sweet spot as I recall. Still need to redo it on my 87 wagoneer.
Yeah, someone didn't like me yesterday. Oh well! Jeep is down until I either tighten the pinion nut to get it driving again or until my buddy comes out to fix it. Either way, it will be fixed properly once he gets some free time.