Another @*%! Air Conditioner Question

Okay, I bought this $99 AC form Sears, and now I gotta figure out how to mount it in my Little Guy, or take it back.
find sears clicky
One idea, that puts it out of my way in my small sleeping quarters, is to mount it though the bulkhead wall between the cabin and galley. But then, I would need to vent the galley for heat to escape with the lid down. I only plan to use this AC to sleep. I won't be in the cabin much during the day, unless the weather forces me inside.
Another option is through a wall, but I'm not crazy about that.
Will the heat from this thing be too much for the galley? Will I need huge vents for that heat? Am I nuts to even try this thing?
CD
find sears clicky
One idea, that puts it out of my way in my small sleeping quarters, is to mount it though the bulkhead wall between the cabin and galley. But then, I would need to vent the galley for heat to escape with the lid down. I only plan to use this AC to sleep. I won't be in the cabin much during the day, unless the weather forces me inside.
Another option is through a wall, but I'm not crazy about that.
Will the heat from this thing be too much for the galley? Will I need huge vents for that heat? Am I nuts to even try this thing?
CD