Ok, I had a feeling that that was your goal.
An inverter only changes the type of electricity you have, in this case from 12 volt DC to 120 Volt AC.
The inverter you are looking at could power a rooftop Air Conditioner, but only for 10 minutes or so before the battery went dead. The battery cant hold that much. You can increase the size and number of batteries but you would have to just haul batteries and get rid of everything else.
A 1500 watt inverter and 2 Golf cart batteries or two group 31 batteries would allow you to use a drip coffeemaker in the morning, use a microwave a few times a day and watch a couple hours of TV, and 2 batteries can handle that. You can recharge them with a generator, or from solar.
But because the AC runs almost continiously it will run your batteries down at a similar constant rate.
If you want AC your going to have to have a genny, and as said before 3000 watts or so, and it will also top off your batteries.
If you are going to truly go off grid, you can see why most go north in the summer, and come back south in winter. Fuel and other cost offset the travel cost to a large extent.
Another approach you may want to try for a while to see how you can function, would be to plan 3-5 days boondocking and then a similar time at a cg. This allows time to fully charge batteries, fill FW tank, drain Grey and black, and enjoy a couple longer showers and AC before going back out.
Either way solar or a genny is going to be a bigger game changer for you than the inverter.
If I wasn't clear please feel free to ask for clarification or anything else. This kind of ran long and went in a couple of directions.
On the CG locations There are some much better deals out there. Some places offer monthly at lower prices with and without electric included,
I'm retired Coast Guard so I tend to use military bases but there are plenty of folks on here doing it from civilian. Join a club escapees or passport America, you can save a lot with that, Ct., is an expensive area, Mt or Id in the summer and Tx or NM in winter will be a lot more affordable and even if you want to boondock, much more comfortable.
