Update:
Well, I thought that I was going to get such great gas mileage on a "real trip". I drove from New Braunfels, tx to Harlingen, then to South Padre Island, then back over three days. I purposefully limited speed to 65mph on the way there, but had a 20-30 constant head wind, and got just under 10 on the way there. I basically said to hell with the speed and returned at about 70 with a similar tail wind and got about 10.5 on the return. Handling was easy throughout (especially during the return). Once in Harlingen, I set up the slide and put an "isoform pad" that I ordered from a hospital supply company on the net (twin size) on the couch and made up a regular bed for my wife. I slept on the dinette with a sleeping bag, so I could get up and have a place to sit early in the morning with minimum hassle. The bed (couch) was incredibly comfortable. I really need to get another pad for the dinette. they can be stored under the couch during travel, and in the front seats when the slide is extended. I had enough room for an extra large kennel (wire folding) for our male Boxer in front of the couch, backed into the cab area with the seats forward. I put the other large plastic cage on the other side of the couch (for our female Boxer). That was just too restricting for access to cabinets, so I will make different arrangements next trip (probably put a folding gate on the other side to keep the female from "visiting" during the night. There are plenty of places to keep bedding, dog cages, computers, and other gear, and really a minimum of noise. The drawers on the bottom need strengthening, and the microwave isn't supported sufficiently in the back.
Once back this evening, we cleaned out the vehicle, and I prepared it for "work" tomorrow.