A 2000 Cheetah was still being built by SMC - Safari Motor Coach -and I believe it was still a Magnum chassis. It was after the Safari/Beaver merge, so there were some pretty good, long-time-in-the-business craftsmen working at the combined company at that time. Some say the quality suffered under Monaco, but the 2000 you're looking at was built before the buyout.
Safari wise, you need to research the Velvet Ride suspension and the issues with ride height and after-market fixes. You didn't say what the drive train was, but if it's the CAT/Allison combination, it's a great combination at 300 or 330 hp.
IMO, Safari was a well built coach and holds up well over the years, Our 96 Sahara with 138,000 miles just got back from a 6 month 6000 mile winter tour and is actually better than when we left. No mechanical issues at all. The coach was well maintained by the original owner, and that's something worth looking for specifically. It was kept inside by the first owner, so I had a few roof leaks to fix.
And that's what I would be most concerned about. If there are roof or window leaks that can start a cascade of issues that would go from visually annoying to major repair.