1. Only on weekend a $200 to $300 solar unit from some place like Harbor Freight will charge your batteries over 5 weekdays.
2. You will need to run your generator to run your A/C. A 3,000 watt should work and since you do not need to worry about noise disturbing your neighbors. an open frame generator from Lowes or Home Depot should work. The Generator will also supplement the Solar in charging your batteries.
3. I can boondock (no A/C) almost a week with only 2 group 29 batteries and a 100 Watt solar panel. After about 5 or 7 days I need to run the generator to charge up the batteries. I run out of water before electricity.
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