Taking a cross country trip with a family of 5. I currently don't own an rv, looked at renting one, but was surprised at how much they. My idea, buy a 2-3 old class c rv, use it for 6 months to a y...
I'd say buy used. The trip is going to cost a lot of money either way you go: buy or rent. Buy a good used unit and enjoy the trip. Sell it when you get back, or keep it and enjoy many more trips.