Well alright sorry for the late update once I got back on home turf I just needed to unwind a bit. I made it about 2,400 miles in 5 days with one airline break/repair, a new fiberglass hard top installed, and some important lessons for cold weather (as well as an opportunity to test the ether start system!). The last 150 miles was without incident. According to my logs I went through 397.25 gallons of fuel to get home.
Truck stops: They were almost all closed! The only two open were the CA agricultural and one on Tehachapi Pass. I bypassed both and no trouble. Hey it says "Commercial" vehicle and I'm Historic. That's my story and I'm sticking to it.....
Tools: should have brought a 3/8" socket set I just had my 1/2" setup. Box wrenches came in handy. Plumbers tape, zip ties and electrical tape all got used. Some 550 cord as well. Don't leave home without it!
Electronics/Gizmos: The 70A 24/12 converter I shipped to the seller was perfect. I brought ring tee's, crimper and some 10AWG. At Harbor freight I got a cheap 750W modified sine wave inverter with two USB ports. The MOST handy thing was the GPS zip tied between the windows where I could keep an eye on it. The truck has some resonant frequencies that are probably hard on it over time and it was good to note and avoid those. It was super handy on downhills to scrub speed and keep it under 60mph. Most notably the canyon between St George and Arizona on I-15. Also helped on when to put hazards on, pace yourself for stretch breaks, get an idea of the day, etc.. The stock gauges are too far out of the way. Truck is a handful at 55-60 for 12 hours a day. This was my most useful item. Also kept my phone charged.
Looking forward to slowly getting to know all the mechanics on it. I don't think I would have done this in a GL truck or rescue. Not without another week budgeted and a few days of prep at minimum. The fact that this one was so well kept by an aviator who likely over maintained it made it possible.
Thank you all for your advice and support! Super valuable!
See you in the other threads I already have a lot of questions on my new to me toy...