For what it's worth, I got 3'' of lift out of my Rusty's Offroad coil lift, and didn't replace anything but the springs and shocks and everything is fine for me. If my axles are off, you would need a tape measurer to notice and it has no effect on driving so far. My sway bar links are a bit short, but until I can get some new links it's fine, if not a bit wobbly on speed bumps.
If it were me, I wouldn't bother with a new track bar until I was finished with all my other mods. I still have a few thousand dollars to spend before I'm finished
2008 Jeep JK X: auto trans, 3.73 gears, D44 rear, D30 front
Mods: 2'' Rusty's coil lift, Superchips 93 octane tune, Cobra 75 CB radio, 33'' Duratrac's, onboard air compressor
My Build Thread! ---> http://www.jeepforum.com/forum/f96/dronacs-build-thread-1104134/