In our real world experience with a 2552 and a 15,000btu A/C unit (non-heat pump) while camping in 90-100 degree weather, we can generally assume a maximum 20-25 degree differential between indoor and outdoor temps. Heat loads play a huge role though. In our case it is two humans, two small pets, some lighting, tv, shades drawn, usually parked in the sun. Our preference would be two non-heat pump A/C units for the additional cooling capacity as well as the option of using just one (the smaller unit would be quieter) when highest capacity isn't required. With one unit in a hot climate, (as long as possible) we ensure we have the cab A/C cranked up while parking and setting up. - Mike
on the keyless item - you can have them order your Chassis from Ford with Ford options. might add a little more front end time for it to arrive. I did the special chassis - but not the keyless. I wanted the Ford Sync package as I wanted the bluetooth for my phone and a USB port - but did not want to order the whole Sirrus/Navigation package from PC. While I was at it for just a few dollars I added in the Daytime running lights and the switch that allows me to turn off the passenger air bag (dangerous to have it armed if I have one of the dogs in a seat belt in that seat).
Did you get the Ford Sync? Does it support Android Auto to use Google Maps on the display?