Since that TJ is so nice and pretty much original, I would leave it pretty stock. But it depends on what you are going to do with it.
If you are going to drive it mostly on road, with a few mild trails or beach, leave it mostly stock...maybe upgrade the bumper, put grabars on it, upgrade the stereo, etc. All things easily returned to stock. However, if you are going to get into wheeling on more advanced trails, then you will have to upgrade the usual stuff (suspension, diffs, etc.)
If I were buying a TJ to ride hard and put away wet on all kinds of trails and/or rocks, I would buy a well used TJ that was already partially built with good parts...that due to higher miles, or not good paint, etc, was cheaper to buy into. Then I could spend that money making sure all the mechanics and maintenance were brought up to top notch...then do all the heavy duty upgrades like 33 or 35" tires with appropriate lift and diff and gear upgrades, brake upgrades, lockers, etc, etc.
But if I were buying a TJ to enjoy as a second vehicle or daily driver almost always on road, I would look at a lower mileage beauty like yours, do only a few tasteful upgrades, maintaining the driveability and road manners, and spend my effort maintaining it and keeping it looking great. You see so many used lower mileage TJ's fort sale that somebody bought, never considered how they would use it, but went for all the "cool guy" mods like huge tires and big lifts, not knowing the proper way to do so (i.e. Rough Country, drop pittman arms, etc.). Then when the TJ was an absolute bear to drive on the road, they dump the vehicle in the used car market for something else.