Currently we have two Interstate GC2's, not sure which AH rating, I think there are two different AH ratings available. Now that it is just the DW and me most of the time, I think we can go longer than three days but we normally don't dry camp where we need the AC. We seldom spend days in the RV, we like to explore and get out and around in the evenings. The DW likes to read at night and I surf some times so normally we don't have much going on. Additionally, I have converted all of our ceiling and reading lights to LEDs and I will be making a liquid tite fixture for use under the MV/Conv. Oven. If we watch movies, it is normally just one a day and we do have to use our 150watt inverter for the TV which draws 35 or 40 watts. The BluRay player is like 10 or 15 watts. We also have a small (5 or 7 watt) panel but even the manual from Winnie says it wouldn't supply enough to negate the parasitic draw. I have a Beltran 15watt solar battery minder that when we install the new system will be only used for the chassis battery, that will keep up with the parasitic draw for the chassis.
I'm going to go for a 250 to 300 watts and the two batteries we have now. Next week I should done with my part of the remodel of the S&B and will be able to go around to the suppliers around this area.
Thanks again Guys you are great.