Hi Buford and welcome to the forum.
Be sure to do a thorough Pre-Delivery Inspection (PDI) when you pick your unit up. Plan on spending a couple of hours doing this to test all the systems and to ensure you know what everything is and how to operate it. Take pictures and if you have a partner, have them video tape the process. If you need a PDI list, click on Tools above and select Wiki. In the Wiki, there are links to several PDI lists. Most are geared toward new RVs but no matter - still good lists to use.
By the way, we have a rally planned in Michigan in 2011 and not far from you, our North American rally will be held in Goshen, IN in 2011. These are AWESOME opportunities for you to:
1. Meet other Heartland Owners
2. Learn more about your rig from the experts - long-time Heartland owners.
Have fun and hope to meet you in 2011!
Jim
On Edit: As your unit is a 2006, do yourself a favor and go over all exterior caulking carefully to ensure there are no seal voids before you put it away for the winter. Caulking deteriorates over time with exposure to UV and hot/cold temps. Caulked seals are up on the roof, along the front and rear caps and other areas.