Looks good, body and interior wise. Towing ability would be determined by the transmission and axle gearing. My 79 Cherokee had a V8, 3 speed manual and 3.54 gears. Once I got the load moving, it was fine...getting the load started was a PITA.
If that one has a T-18, as opposed to a T-15, then you might have a chance.
$5000 is a little spendy for me, and I would imagine the FSJ market is much better there than it is here, but you'll get better input from someone that knows the region better than I do.
His: 1999 TJ Sport
Hers: 1987 Grand Wagoneer