Here's an article on portable a/c units. I didn't read it so don't know if it's any good or not, just posting the link.
Portable Air Conditioners -- Keepin' Your Cool
Portable Air Conditioners -- Keepin' Your Cool
Just a potentially helpful fyi on a/c. I bought a new rooftop r/v style a/c, with heat pump, from these guys in Mo. for $525. Weight is 108 lbs.
COLAW RV PARTS & SALVAGE | WE HAVE YOUR PART!
Colaw RV Parts & Salvage
I-44 Exit 22
10389 Cimmaron Rd.
Carthage, MO 64836
Phone: (417) 548-2125
Fax: (417) 548-7219
Toll Free: (877) 548-2125
It runs OK off a 2000 watt 30 amp generator. Weight is 49 lbs.
I am trying to noodle out an acceptable method to mount the gen. on the rear driver's door that is decent looking and secure. Some kind of locking box I think.