That will be a nice setup! As far as spare parts for the house, the Honda generator and a well stocked tool box should get you by. I have never towed a wheeled fish house, but have been stuck a lot and have had to deal with frozen down shacks. If it was me I would be more concerned about making sure you are properly equipped to get the ice house on and off of the ice. You may already have these things, but they are worth considering: start out with the best gripping snow tires for your towing vehicle, tire chains, kitty litter, tow straps, jacks, blocks and a winch, or come-along to pull the tow vehicle/ice shack if it gets stuck. A jump starter, or jumper cables for your tow vehicle, just in case. Those are just some thoughts....
