Welcome to the 23b club. We love ours and are getting ready to pull it out of storage next weekend. We've turtled in it on the highway to get some sleep and it's worked out well. It's nice to be able to access everything. It's kind of mod friendly. We've added a battery box on the front, LED lighting, and getting the dealer to put a fantastic fan in the main body of the thing so we can try to keep the bathroom door closed more but move air. Check out popup gizmos for the ends and 3M command strip storage helpers work great to add some storage around the place.
I have/had 140k on my 2004 Expedition and I was concerned about being so close to the max load and reliability that I decided to sell it last week. Worked out well, I have kept the truck pretty clean and serviced regularly so a co-worker jumped at the chance to buy it. I found a Tahoe with 59k on it with the 5.3 Vortex for $11500 and I was able to get it down to 10K. Cost me $4750 additional but I have a vehicle now that can tow up to 7700 pounds and I don't have to worry about the reliability issue as much. Where and how long is/was your first trip out?