One of the best things about running Ford E-350/450 is that any parts you might ever need can be had just about anywhere. Between the internet, local auto parts stores and overnight shipping, there is virtually nothing you can 't have in 24 hours. Add to this equation the fact that there are Ford dealerships all across the nation and just about any independent mechanic can work on your coach.
As noted a 15 year old coach with 52,000 miles probably suffers more from neglect than use. Make sure all of the requisite maintenance is current - cooling and brake systems flushed, oil, trans, and differential changed {going to pure synthetic is a good idea}. Get your tires inspected and aired to the proper psi for the loads they will actually be carrying {and watch the DOT code dates}.
You might consider adding an inexpensive compressor and/or some sort of jump start/charger {Harbor Freight is a good place to shop}. An assortment of fuses takes little space and can be cheap insurance. A reliable emergency road service is a must as well {I like Coach Net}.
:C
