Any CJ7 of that era has probably been hacked. The main thing you will want to have him look for is that the engine, trans and transfer case are intact, and that there is no rust on it including the floors. The front seats were prone to breaking welds and collapsing as they were just foam over sheet metal migged in a few spots. If it is a manual trans they were really prone to breaking. A standard joke at the time was "do you have a zipper in the trans yet. If not put one in because you'll be in there a lot." I do miss mine (1982) but not the constant work on it. Warped exhaust manifolds were really bad, and the front axles wore out a lot. I had it almost 400,000 miles so it was rugged in many ways too. There is an excellent Jeep wrecking yard here in Sacto (J&W). I've known Jack Duncan for years. He is getting up there in years though.
If it is the one on CL I only noticed a couple things - there were no engine photos so one would want that to see how original it is, and there is a chock behind the right front tire for some reason. Maybe some parking brake issues or something? Don't remember seeing mileage in that ad either. I still have a rear axle hub puller for CJ7s. You'll need one if you ever go to replace the rear axle or seals. My rear axles had run out in them from the factory. Summer's Brother turned the faces for me and then it ran really smooth afterwards. Those hubs had a history of spinning on the axles. Summers Brothers had a solid axle that solved that especially for folks who were running V8's.