Nice report. Looks like fun to me. I was hoping to make the trip this year, but it didn't work out.
It's been a couple of years since I did Cinnamon and Engineer...that was in an extended cab F-150 4X4 with standard length bed. No real problems then; had to back up once on a switchback, as I recall.
Now I have an F-250 Crew Cab with standard bed and ATC. It takes half an acre to turn it around on flat land. How did your F-250's handle the switchbacks?
-Buzz