Hi, all. Just my $.02 here re CDL's. According to federal DOT regs, a CDL is not required for any vehicle titled as camper/motorhome, regardless of GVW, as long as it not operated for hire or carrying more than 16 people.
Local law enforcement may not know this, and I have gotten out of a lot of jambs by just showing the officer the law in the DOT Handbook, (+/- $5.00) at most truck stops. Hope this helps.