Is it all original stuff on the machine? Original engine? Seems like a load of hours for an engine, and a good fair number on the rest. See if you can get him down a few hundred, then mow it this next season and make some money with it and if it goes to poop you lost nothing.
7x14 Stealth SE Enclosed with 48" side ramp
08 Toro Z400 48" deck, 21HP Kaw with EZ Vac twin bag
09 Exmark Turf Tracer HP 36"
21" Toro SR4 Super Recycler
Stihl KM90 Kombi w/ straight shaft trimmer & tiller heads
Husqvarna 125B Blower
Turfco XT5 Aerator
Turfco LS-22 Overseeder
I can do all things through Him who gives me strength.