We're looking to add an A/C to our pop-up, a 2015 Starcraft 1221 (12' box with queen + full size beds). We're primarily looking to expand our options a little bit when it comes to climate and places to stay during the summer. We do fine with cold weather, and while we don't seek out hot weather normally it'd be nice to have a place to be comfortable when it's in the mid 80s to mid 90s (maybe the occasional high 90's) in the middle of the day. We'd be looking to install either a 13,500 BTU/hr or 15,000 BTU/hr Dometic or Coleman and get a 3,000 watt generator to run it. Since this puts us in the $1200-1300 range (self installed), it'd be good to get some feedback as to how well these things work in our application. What kind of temperature drops can we expect coming from outside to inside? Will a reasonable A/C unit keep it in the 70's inside when there's some shade on the camper and with the temperature range we're looking at or is that a lost cause with a pop up? Are bunk-end covers an effective way to help out?