AIMS has always worked well for our ranches/farms and I have zero complaints - so I'm sure you will be happy with your set up.
Now for the important question:
Arizona has a coast :-) ?? Did Cali finally fall of the map ?? Sorry - couldn't resist and wouldn't complain either....
So many states/counties don't allow permanent residency in Tiny homes/RV it's hard to find... My brother bought 4 separate but joined lots and moves his RV from one lot to the other 4 times a year (130 day limit on "camping" per lot) to get around the restrictions.
Depends on the area you are looking at and the cost to drill a well in that area. Lots of people decide to do their own rainwater harvesting and or water haul. Some of the POA's offer a shared well on the ranches... the lot I own is this way - 42 acres and I pay $160 yearly for water and road...
If you are leery just put a blanket, cardboard etc on the panel(s) - anything that will block the sun (I use cardboard/tarps all the time). But doubt you'd have an issue anyway as Schlagger said.
If it's being used every other weekend and you are keeping the batteries fully charged you will be fine.
See this pdf from Trojan for example.... takes quite a bit to freeze a fully charged battery.
https://www.trojanbattery.com/pdf/WP_DeepCycleBatteryStorage_0512.pdf
I wouldn't trust them either and will never use them ... That said it seems to be quite common now days for companies to CH11 and reorganize and come back - my problem with that is it's always the end users that get screwed.
Maybe this will help you out -- you know that A = 16 and depending on number of panels c would be a multiple of either 27 or 41 depending on how you are mounting them.
If Sprint is available where you travel (I know... fat chance) you could check out Ting. You have to pay a line fee of ~ $8/month and then it's all pay for what you want.
It should be less than $2k.
https://www.solar-electric.com/xaxwmp80amp6.html?gclid=CjwKCAiAy9jyBRA6EiwAeclQhHFXjaevhoTe_-NlMvOPJdltlfE2QLrtG0b7UfzsqwZwlLbC6eqcExoCPDkQAvD_BwE
Heat pumps quickly go from a COP of 3+ to much less than 1 as the temperatures approach freezing and go way below as in -40... then it's most likely just emergency heat which is crazy and totally inefficient.
Well I assumed you were trying to answer the OP's question...and I would like to know as well and I would assume anybody reading the OP's question would want to read answers that were relevant to such..
I'd vote for #1.
Not sure how your panels are setup but usually the main panel is ground and neutral bonded and secondary panels are not as they get power from the main. So if you are now turning a secondary panel into a main you may need to look at that.
Ohms law still applies but maybe one of the variables may also be subject to change.. i.e V = I*R - > V = I * R(x) for example where R(x) is an equation