W/ 4.5" of lift, you could clear larger tires. Aftermarket wheels with an offset to get them to stick out a bit to widen your stance would help out too, the XJ's are a bit top heavy. May want to look into a slip yoke conversion to help out driveline angles. Sway bar disconnects help off road since you have a solid front axel.
There is a ton of stuff you can do, it's just a matter of what you plan on using that nice XJ for

Next to YJ & TJ's, the XJ's have one of the largest aftermarkets