Rollback wreckers
I have an International 1999 4700 for personal use. You only need a CDL if the GVWR is over 26000lbs but you do need a DOT physical/card if your GVWR is over 10k. If driving out of state and over 10k you are supposed to have a DOT number on the vehicle. My insurance is $1100/yr using a Safety Insurance agent. My usual insurance, USAA, won't insure "comercial" vehicles so I had to go with a different company. NH registration fees are tied to the age and weight of the vehicle and it costs me more to register the 1999 4700 than my 2020 WRX.
Long story short, I'm thinking about getting rid of the 4700 because it I don't use it enough to justify the fees to keep it road legal.