Unless you have done a lot of RV camping before, I would suggest you rent an RV several times for week long trips first!
I have had several friends that bought the biggest and the best and set out to see America. Only to come home early and sell the RV before the year was over.
Great fun at first, but when the fun turns to labor and huge expenses, or you are stuck for days with the spouse in bad weather waiting for a starter solenoid, fun changes to something else.
Rent first.
I’m looking into that but don’t want to spend what little money I have on experiments right now.