Not much left to add.
A friend went to Montana to work at a power plant. During the winter, he went through propane faster than he ever imagined. He was heating a large, expensive class A. His slides leaked cold air.... So he packed blankets he bought at Walmart around the slides. His underbelly was heated electrically and with gas furnace. His only issues were trying to stay warm. And keeping up with his propane tank.
So with all that in mind, maybe buy an electric blanket or two for you. Sounds like you have plenty of info on your rv..... So think about you.
You will need more frequent trips to store as well. Food, propane tanks(maybe just swap out once a week. More expensive but more convenient. Just check the date code on each tank you get back. Snow shovels, skirts (already mentioned),
I love winters... I'm a New Hampshire guy...
But have lived most of my life in Arizona. So being cold is no longer fun for me....
Wishing you the best. I have fond memories of the quiet in the woods during a snowfall.
2015 Sierra 1500 Denali
2014 Coleman 249RB
David Jon Devoucoux
People, Places & Things...for over 40 Years!