I agree with the others, can it be done? Definately. Will your stay in the Michigan winter be enjoyable? Probably not, depending on how cold it gets. Keep in my you own a RECREATIONAL VEHICLE!
None of these were designed for extreme temperatures, hot or cold! There's no way around it, you WILL use a significant amount of energy in either extreme, hot or cold.
Just my 2 cents though. Good luck in your decision.
Dan