We have a 340Xhp12 and have 2 ac's. One in the bedroom and the other in the main area of the rig. Each has independent controls. There is an option for us to get a 3rd ac put in the garage area. I'd suggest getting the 2nd one at a minimum. I don't believe that one will be able to keep it cool enough. You also have to factor in if you have a front bedroom with a door and how the garage is separated from the rest of the camper. If you sleep with the door closed then you need one in the bedroom. If not then put it in the garage area to keep it cool for the kids.
