Hi rle9599,
Congratulations on your new MPG and welcome to the Heartland Owners Forum. Sounds like a sweet deal. One thing you'll want to do is carefully check all the caulking. It'll have aged even though in storage and it may need to be recaulked to prevent leaks. Also, depending on how it was stored, you might need new tires. At the least, keep in mind that tires age even if not rolling and can "age out" before they wear out.
Feel free to post any questions you may have. This is a great place to get answers.