Sitting in Apache Juntion replying to the OP questions. Temps in the high 80's.
Our 7.5 cuft NovaKool still performing well in year 6 with 330w solar and 4 6v AGM batteries(400ah). We ordered the AC/DC option. Seldom plug in unless at home but who knows when you will use the AC option in the future or for resale.
Have been well out of level numerous times so a Danfos compressor is a must for our kind of camping. Venting: Our TC came with top and bottom fridge vents. When we left BC March 31st, it was cool so I left the plastic insulation covering the inside of the vents on so we can benefit from the small amount of heat produced by the unit. Now the temps have climbed considerably, When we arrived at Lost Dutchman, I removed it. Nice to have the option.
We carry our Honda genny along but never need it with our solar and 4 batts. 17 days camping so far and had to take an electrical site at Snow Canyon to get a site but other than that, batteries are topped up usually by noon at 14.42v (max charging level). 4 batteries would be ideal but if you are carefull, 2 of the largest ah models that you can fit in your rig will work. Put in as much solar as you you can or at least design system to add on.
Good luck
Dave