The Otter lodge is big! A couple of my buddies have them and I've fished in them quite a bit. Very nice flip over hut! Are you towing it with a sled or quad? It would be a chore to pull by hand, especially with the insulated fabric, which adds weight.
I have the Otter Cabin, which is one size down (still good for 2 guys) and I didn't get the insulated fabric either (Just insulated top) and I stay warm up here in NW Ontario with just a single buddy heater going.
The Otter sleighs are the best there is. Be sure to get the runner kit.
My first hut was a Clam and I'll never own another one of those after going to Otter.
I have no affiliation with Otter, this is just my honest opinion.