I'd advise to budget for 'good parts' besides just lift springs.
For a mostly street XJ, I'd be looking at controlling body roll as much as possible:
I'd retain the front sway-bar, and if you can find one from a 4.0l Limited, those are a little stiffer (28mm vs 25mm normal bar.) Pro-Thane greasable poly bar mounts and JKS Quicker Discos complete that part.
Kevinz makes a pretty beefy track bar & bracket (a modified JKS bar and modded stock bracket) RE XD and TNT are both supposed to be very good as well. I don't know.
Don't overlook the control arms either... stock arms with rubber bushings have useful limits somewhere around 3-4" lift, but are pretty flexible/vulnerable. I opted for RE uppers and Currie lowers (with the flex-joints, not bushings) a little noisier than rubber, but lots more rigid.
Pass on the cheap hydro shocks too... Once your lift height is set, get some measurements and buy some good gas-charged pieces. Bilstein 5125s should work well for reasonable cost.
I don't know if HD steering is worth it on a 3" ish street jeep, but a C-ROK box brace and sleves/bolts probably is... Anything to reinforce weak links isn't really wasted money.