Motorhome or trailer

I am a retired veteran with severe service injuries and can no longer work. I have a great pension and my wife is a nurse so we do fine. My wife travels for work and we would like an rv to save on lodging. Due banks refusing to loan on rv`s we need an owner carry contract. I can come up with $1000.00 down and afford about $200.00 a month with extra payments throught the year. A military allotment will gaurantee payments and is automatic each month. This goes till released by the holder
Thanks