Newbie PV/batt/AC design questions for military truck RV...

Got a 5-ton diesel M934A2 expandable van, similar to this...

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Currently re-insulating inside as a full-time off-grid home.
Also, will paint reflective paint atop roof & will utilize some
moveable shading on any sun exposed sides of the vehicle.

With it's poor mileage, it won't be driven often, but rather
parked & lived-in for many months at a time, including in
Texas summer heat. I'd guesstimate it'll be occupied most
all evenings and only 24 hrs/day for half the week, at most.

Electric loads; LED lighting, small portable ice maker to
infrequently feed small super insulated ice chest, bread
maker twice a week, small microwave infrequently, and
12 vdc laptop, radios, fans. Water useage is all gravity
feed, stove is propane, solar oven whenever possible,
rare space heating needs would be either via smallest
marine diesel heater or propane.

Biggest load will be smallest efficient window AC available
that'll do job. For sleeping, we are talking about 50 sq ft
or 325 cu ft partitioned off quarters. AC window unit at top
center front in overhang allows directing AC exclusively into
there at night. Total open living area, including bunk area,
not taken up by storage space for supplies, water, galley,
head, etc. works out to about 150 sq feet or 975 cu ft.

Also, have Solar Chill 1412XP Evaporative Cooler to utilize
instead if/when humidity low, which is not often enough
here in central Texas.

While truck is 24 vdc, I'm not looking at trying to tie into
its batteries. Nor, ever charge house batteries via truck.

Components I'm starting with...

6 Kyocera KD-135-SX-UPU, 135 watt 12v, 2B mounted atop rig.

4 Lifeline GPL-8DL AGM battery bank, about 1000 amps total.

Dedicated 5.5 hp diesel driven DC battery charger, which can
put out either 180 amps in 12 vdc or 160 amps 24 vdc.

BTW, DC genny on underside of truck and battery bank inside
with window air conditioner and evaporative cooler and other
loads will all be in close proximity and I've lots of free welding
wiring here, so choice to wire 12 or 24 vdc can be based much
less upon cost of wire size/lengths.

I have no illusions that six panels and 1000 amp battery bank
are sufficient for running AC continuously. And, swamp cooler
will often be ineffective to use instead when too high humidity.

When AC required, I'd ideally like to be able to, at least, bulk up
battery bank right before bed time via diesel DC charger, shut it
down, and then not exceed a battery bank draw down past 50%
with running AC on lowest setting at night. Then, fire it up again
briefly in the morning for quick bulk charge and let panels bring it
up to nearer 100% the rest of the way during the day, hopefully
sunny, especially when I'm gone and no loads then on system.

Appreciate any thoughts on above; good/bad/ugly, or creative
enhancements to reducing loads or maximizing energy production,
along with any specific recommendations you might have for...

- Do I set up system and batteries for 12 vdc or 24 vdc? A lot of
my daily use LED lighting, fans, laptop, etc., are already 12vdc.

- PV charger size make/model and best connections for tying in
together six KD-135-SX-UPU to it. I won't be adding more PV's,
though I might fool with a small wind genny sometime, if both
gotten cheap and I found myself on windy TX coast for a spell.

- Inverter size make/model

- Battery charger for if/when I have free shore power available.

- Any creative ideas to tilt mount PV panels, ideally all together as set

- Best radiant reflective roof paint, if for waterproofing, too, even better

- Efficient, smallish, AC unit for mounting in top front overhang of van

I know that selecting and settling on Air Conditioner, thus knowing its
running amp draw and starting surge, should come first to best select
inverter, but you might could help narrow down inverters for me here,
if no specific air conditioner recommendations to go along with it, too.

Thank you anyone for any suggestions here.