[AussieinNC]

Most motor homes require a CDL Commercial Drivers License to operate.
You will need full insurance coverage.
A registered LLC style business setup.

For deliveries of boxes, a box truck is your best bet and it should be diesel albeit fuel costs are high right now.

This will be a business, so no time to fix up a builder to get it going...you need reliability and fuel economy.

Finally a good accountant and attorney.

Good luck