You didn't say what chassis the Rexhall is riding on. That does matter to some degree. I would also want to know what it has been doing as that is very low for a 20 year old RV at 2350 miles/year. It must have sat somewhere for much of it's life. Rexhall did have a very good reputation, but after this long that probably doesn't mean much as care and maintenance is the key. You also need to check the tire codes to make sure the age of them, as tires should be replaced at about 7 years of age, no matter what condition they look to be in. I would also have an oil analysis done on a sample of both the engine oil and transmission fluid. I would plan to have all belts and hoses replaced and all fluids changed including the brake fluid and coolant.