Maybe you should stop installing units under the deck! That would probably help the cooling instead of just adding more units until it cools down in the building.
I'm not for certian who you are directing this comment at but I am sure that amickracing did not install the units under the deck. But he had to service one, and in doing so was trying to come up with a solution as where to move them to when the time comes to replace them.
I never let schooling interfere with my education... Mark Twain
Maybe I'm weird (well, there's really no maybe about that), or maybe I've just been involved in the HVAC industry too long, but I don't understand why people don't like to see the units. I actually think a/c units are kind of cool-looking. (NO PUN intended, seriously). I don't know, maybe it's just me.
Maybe if you could rig a copper top with gutters, and rock work siding, more of these types wouldn't be so ashamed of them....