There have been a lot of excellent ideas in here so far! I really appreciate all the suggestions, keep them coming folks!
I'm thinking I will be skipping the 3-4 day "test" vacation and start actually prepping for a 14 day or so 3000 mile round trip of the southwest in January. If something goes wrong on the road because I didn't do the "test" trip, well, I'll just deal with it at that point!