my wife and i drove a d unit for tristate for several months then we left it to drive mail. well we are bored of the same old route every day and we are planning on buying a truck.we are thinking about buying a new class c truck and driving for fedex. as a team we should do pretty good shouldnt we.the wife wants a shower and toilet in the truck thats why i was wondering about the class c truck.you can put a bigger sleeper on it right?