I assume it's on a Ford E450 chassis?
Just as a heads up, if it is built on the E450 chassis it will not have Ford's great TorqShift 5-speed or 6-speed computer controlled transmission in it. The 5-speed TorqShift was first available in the 2005 model year E-350/E450 chassis. The 6-speed version became available many years after 2005.
Also, check to make sure that you can stand up in the Bigfoot shower without having to bend your head. I couldn't, so we had to pass on a used Bigfoot when we were shopping for a Class C years ago.