Looks like some serious mods here, Bill and Rich are correct on numbers, very impressive. I thought about doing some similar mods but really don't see the need to have ac when dry camping as we do so little of that anyway, i have a small pop up i kept and use when out in more remote areas. I could see the front storage being filled with several batteries, and while solar and wind generators would work excellent for charging them, running 50 amps could and would drain batts faster than the charge rate from either system or both together so a generator makes more sense from my point of view anyway, just mho.
I am not 100% sure but the rebates vary by state as well so depending on where you live and if that state will allow solar or wind power on an rv to qualify for the rebates since the mods are not on a permanant home.
I see how the mods can add up in a hurry as well, for the money there are deals to be had on generators and a person could end up with a little money ahead, especialy if you are only looking for 30 amps, again just mho.