I did the extension cord thing during the last power outage (almost 4 days) but I figure since my panel is already wired for a genset, I should take advantage of it. Especially since I have an oil fired furnace and radiators, I should be able to run my whole house heater with very little draw. The circuits that are wired into my transfer panel other than the heater and well pump are my fridge, and my entertainment center. I think the genset I have should be able to run those few items without any difficulty. For me the big thing is the furnace. I was worried if we went another few days, I might run into a frozen plumbing situation since it was going down into the single digit temp range overnight. Luckily it was sunny during the day, and the temps in the house stayed in the low to mid 40's. I have stayed out in the rig during power outages before, but we have 3 Labrador Retrievers and 2 cats. With the slide in, that would be a bit tight for an extended stay... Thanks for all the quick replies! I think I'm going to rewire the transfer setup for 110 and just skip the well pump. It seems much cheaper and easier for sure, and will take care of 80% of my regular household needs.
