Chris & Rikki,
This is not intended to dissuade your plan by any means, but please do this.
Always be ready to hold-up a day or two because of weather.
Depart with full water and propane.
Keep provisions at a three days supply until you are sure of clear weather.
Until you are very familiar with your coach, never run below 1/2 fuel. (Learn to use GasBuddy app.)
We used to have to travel in winter in the northeast a lot. We frequently had to stop for a day. Once two days, so three is just a real good idea. If things go real bad, you may not be able to find anything.
I hope you have many boring hours on the road and all the adventure is when the coach is stopped.
Matt