You are listing like 100 variables and you want solid answer?
I hope not?
I camp with single battery just fine and I make HUGE cup of coffee every morning on inverter power.
But then I usually drive the same day, or start generator for AC operation.
In your list I see electric refrigerator. Would you camp in area with triple digit temperature, or with fridge side facing south the poor thing will run 100% of the time. For that alone you need 200AH battery bank and probably bigger solar than you already have + backup generator for cloudy days.
BTW is the fridge really running on 0.8 amp?
Also swamp cooler will not be efficient when you camp in higher humidity areas, aka Folsom lake.