The following comment is to do with the rear bath models.
If you are talking about the AC output, the only thing that will help the mid area (beds) is to carefully adjust the rear air output louvres on the AC unit so that there is a breeze that goes over the door frame (bulkhead) and will therefore fall into the sleeping area.
The louvres can be swivelled up and down on the original Armstrong AC unit, and once carefully adjusted, the AC can cool the sleeping area quite effectively.
The same would be true in a mid-bath unit, but it would only cool the hallway outside the bathroom area.
If you have a rear bed model, then all I can suggest is a small fan to help push the cool air to the back sleeping area.
If it's to be, it's up to me.