You dont really need the micro wave. Gas is very practical for heating water or cooking food. I also like it for the house furnace but you then get into the 5.x amps of power draw on the batteries. The furnace, bigger led tv's, satellite boxes are the bigger power draws on your 12 volt system. You would probably be running something like a box fan often so that would be one of your bigger power draws. You could figure out what it uses if you try to do a power audit. It may be a little involved depending on your experience but there are many people here who can help you through it. The more we know about how you use power the more we can help you. The first issue is ac, if it's a must for many hours you need to be plugged in. We try to move with the weather and always be just a little to the cool side. If it does get colder than expected we can easily run the furnace as compared to the ac. Propane is pretty easy to get and the furnace motor is far cheaper than a generator.
