You were probably on the low energy use side of things until you mentioned microwave. It isnt that the micro will consume a ton of amp hours, it's that it has a high current draw. Battery, inverter and cable sizes all go up when trying to power something like that. Having an idea of how may amp hours you use will help determine how much solar you need. If you carry a small generator that could be used for running the heavy items and also cover times of poor sun. A generator and a GOOD converter are an effective means of putting in the heavy amps that the battery wants early in the charge.