Dianne, since renting isn't an option, I'd suggest visiting a dealership and taking a good look at what's available in a Class C. Based on your fiver and your dear cat, a B seems too small for your comfort. Ask about some of the options others have recommended, and look for basement doors that open by swinging to the side, not up. A good dealership will give you a thorough walk through on a purchase, showing you how to hook up, etc. Day to day RV know how isn't very difficult or complicated. A good checklist helps.. You will learn a lot your first weekend in camp driveway, and boost your confidence too.
PS. Renting a cabin means a lot of hauling...bedding, a cooler, things for cooking and eating. An RV is much less work, not to mention cleaner.
