Hi Lori and
Sounds like you've got the bug.
It's really hard to tell how much that first RV vacation is really going to cost when you set out. If you catch the bug you're hooked and that's all she wrote.
You might try to browse through our Full Timers forum and use our search feature to get some good background on questions you might have and then feel free to post questions to your heart's content.
Many/most full timers prefer Class A coaches due to the storage room they provide and the fact that you can tow a car to use as transportation when set up in camp. Many fifth wheels offer floor plans that feel much roomier and more "home-like" but they tend to have a little less storage and require you to have a fairly large truck to tow. That big truck has to be your daily transportation and some don't like that idea.
You've come to the right spot to learn. I made a post similar to yours nearly five years ago and have since bought a new Class A diesel and covered 40,000 miles and 34 states so far. We sold our home and were full time for two of those years but have recently bought an Arizona town house to serve as our winter home and a base for our travels.
Best of luck to you both.