what about the vent on the front of the A/c? I always thought you couldnt really duct like this because the a/c usually takes air from the room in thru the front then blows out conditioned air out the front too, in the back it takes in air to run the compressor and exhausts air to run the compressor out the back, maybe my portable is different.
My portable has 2 ducts out the back, one for fresh air from outside and one to exhaust air outside, then the ac has a spot where the conditioned air comes out and then a spot where it takes in air from the room (not outside like the other). I have to clean the room intake regularly. So i pretty much have to put this portable ac in the room if i wanted. Right now i have it outside my tent in hopes it will just cool everything in the room.