[wingnut60]

I have seen people living in WY in the winter, but have never done this myself. I do know that you need a large propane tank, along with a secondary, dependable electrical generator. If you depend on electricity for everything, what happens when the grid goes down? Thats when you will need a good gen of about 7500watts.
Once you get the utility source as failsafe as possible, then you will need to work on insulation around the perimeter of the Suites---have seen hay bales and professional-looking skirting used, but you will need this to be really hole/space free, to keep out drafts. A heated and insulated water hose is a necessity--lots of ways to do this, many use heat tapes but then if the electricity goes down...
Long before cold weather sets in, look everywhere in the basement area for any water lines near to the outside walls--need to insulate them very well. Also would decommission the outside shower, if it came with one. And a 100watt light bulb in the service bay compartment will provide heat to help prevent freezeups.
Sorry for your loss, but sounds as tho you have maintained a positive attitude. Hope all works out, the unit you have is a good start to survival in the cold, just need to be proactive on insulation and heating.
I have lived in mobile housing in WY in winters--you will also have to be aware of the buildup of ice on the outside AND the inside of the windows from humidity--might need a dehumidifier when using the furnace. Also, if you will have a dependable electricity grid, consider the installation of a Cheap Heat option on the furnace--this is an electrical resistance coil that is installed in the furnace and uses electricity instead of propane in the furnace.
Joe