The most difficult issues to address are the water to the LQ and the waste from the LQ. They are both subject to freezing. Also, many LQ floors and goose area flooring have none or only marginal insulation. In some installations, the pex plumbing is run under the inside flooring and can be frozen as well.

Just as with a mobile home, keeping the wind from going under the floor area, will help prevent the flooring from rapidly cooling. This is accomplished by installing skirting around the open areas. This will block most of the wind. I've also seen hay or straw bales used for this purpose.

You will need a constant source of electricity to run not only your heater, but heat tapes on your water supply and drain plumbing. You will need a septic drain source, a larger propane tank for your cooking and water heater. Instead of constantly running your furnace, most LQs can be adequately heated using an inexpensive ceramic heater. They are thermostatically controlled and are maintenance free. One will easily heat our 13' LQ when the outside air temp is in the low 20's. When it's truly cold, a second heater should suffice. Sliding a sheet of rigid insulation under your mattress, will help stop the chill from an uninsulated metal floor.

You LQ is not insulated or built for constant sub zero living. Fortunately its small size allows it to be easily heated. The utilities are the most problematic to address. Anyone used to living in a mobile home in those temperatures, should be able to help you with your installation. BOL