Yeah, it's not fun...but first let's get a couple things straigtened out before you do it...
Track Bar, sounds to me like yours is shot (because your axle is moving), I would replace it first off.
Now, the wobble. Before you start replacing everything in the front end (I've done that) I would go out and get a wheel alignment and balancing done at a good shop. That is the cause of the wobble most times.
If you really want to change out your control arm bushings, be my guest, here's what you should do...
First, go out and buy yourself new lower control arms (the cost of OEM ones is just about the same as bushings), if you're running no lift or up to 3" you can get OEM ones,
http://www.quadratec.com/ will be your friend here (go to Cherokee, then Hard Parts, you'll find them there cheap, note: These are sold in
single units, you will need two, don't make the same mistake I did!) Get new Upper arms as well.
Now, the only bushings you have to change are the ones at the Upper Arm to Axle mount. Those are
not fun to do! A good replacement is Napa part number NCP 2671372 These come in pairs, be warned.
Now, start out by putting the new bushings in the freezer, this will aid with installation. Get yourself a drill and drill out the rubber part of the old bushings, then remove the inner part. Now you're ready to start beating it. Get your BFH, some penetrating lube, and a screwdriver. Spary the lube, and try to beat the bushing out. If that doesn't work well you can try to collapse it a bit by beating the outer shell of the bushing in, you should be able to deform it enough to get it out. It ain't easy, but it's not too bad once you've done one.
Also, here's what I did...I took one of my old upper arms and removed the bushing from it, just to train myself. That way you can figure out how to attack it with something easier to get to.
When installing I used a 2" pipe cap to drive it in, that way the force was spread around just the lip of the bushing. I ended up removing my coils to do it, it gave me more room to swing the hammer.
Anyway, do the alignemnt and balance first, you don't want to do this job unless you have to.
Sequoia