Ted & Renee, you haven't answered the question of whether you have RV'd before or how much experience you have.
I really recommend you figure out your mission with your RV prospects. I guess being a submariner you might be use to confined storage, navy baths and such. The question is whether your spouse is up to the same.
For example, what toys are you bringing with you, how often will you have to visit the laundramat. That helps you realize how much storage and what type of storage you are going to need.
If you haven't RV'd much, it would be well worth your time and money to rent one. If you are having heartburn issues at one week, just imagine how you will feel after a month or two on the road. You may also find something you thought you needed to have that you didn't or something you thought you wouldn't need that you do.