I've owned two CJ-7s (an '83 and an '84) and an '05 Wrangler. Just this past January, I sold my '05 Wrangler for $15k and bought a '99 4Runner for $4.6k. I loved my Jeeps. I drove my CJs all through high school and partially through college. I drove the Wrangler through the second half of college all the way to pre-fatherhood. CJs are fun and hold their value quite well, especially in good condition. They're EXTREMELY easy to work on....if you have the money and the tools. In high school/college, I didn't have the money or the tools and it was always a headache dealing with issues. I decided I needed a new Wrangler because the CJ caught fire while on a roadtrip and without any money to maintenance, but with my parents paying the first half of the payments, I could go on worry-free.
This year, I decided to get a 4Runner because 1) storage space, 2) quieter (because the wife likes it and wouldn't ever ride in the Jeep), 3) nicer interior (because the wife cares) , 4) 4 doors (new baby), 5) multi-mode 4wd, 6) e-locker, 7) $15k - $5k = $10k appreciating in the bank rather than depreciating in my garage.
Jeeps are fun and unique and easy to work on, but you've gotta have the money and the time to work on them. If you (or your significant other!) prefers creature comforts, or if you prefer storage capacity, then it's probably not a good fit and you're better of keeping the 4R. If you have the time, money, and freedom then go for it, and maybe later on you can get the storage and luxury from a 2nd vehicle.
That particular Jeep appears to be in pretty good shape. Things are quite a bit different with CJs than our 3rd gens. They have solid front axles and leaf springs making suspension quite a bit different. The interior will be minimalistic, barebones, 80's-quality stuff: levers and knobs, rather than electronic buttons. When something does mess up, it's pretty easy to find and fix the culprit. Also, everything is bare steel, so it's no big deal if you just drill a hole through something. Also drain plugs in the floor board are fun. Also finding extra parts and accessories is really easy because everyone sells Jeep stuff.
Keep us posted on your decision. Maybe you can find out what kind of specs the Jeep has: rear differentials, any lockers, or other mods, etc.