It would be difficult to try and go it atone on renting your own camper. Try RV Share or Outdoorsy. You can get insurance through them. And a lot of these interesting questions are explained.
Not just tow vehicle safety, but what about brake controllers, waste dumping, linens, bathroom supplies, cleaning supplies, what's included what's not?
If you rented a small camper yourself for a weekend from an RV dealer, you would get a good idea how it's handled.
I've also been doing some research into renting my toy hauler, and next year I will likely be renting mine out through one of those sites for the "down" times. I'll have blackout dates for my own personal use. A lot of anxiety though about damage. There's always risk, especially when it's on the road.