I am very similar to you in your needs for a camper. I wanted Artic Fox but found it real difficult to get in Midwest. I went with a Montana instead and maybe wished I stayed with the original plan, but it was 10K cheaper, which was too big of a significance and the wife prefered the Montane more.
Be very careful on those weights, those Artic Foxes are very heavy. Also, need to figure out a good generator plan, and most definitely thermopane windows!
I say a generator "plan", because this could be 1 big generator or 1 big one and 1 small one or 2 small to medium ones running in parallel. I have found this generator plan a work in progress and tough to figure out.
I use an electric space heater to heat up the 5th wheel (takes 850 watts to operate) It works very nice and heats up the camper nicely. I use a inverter generator to power it and the rest of my power needs. I do not camp year round, only for hunting and a small weekend get-away during the cold season.
