Couple things. Both of these points are most relevant if you have aspirations of being successful with acros...
1. I would suggest bringing down the height of your tallest structures. Aros will reach for the sky on their own and don't need an elevator that puts them close to the surface. You end up only seeing the side and bottom of the colony otherwise. Larger tanks that can have multiple rows of structures back to front can get away with taller towers. Small tanks don't so much.
2. Think of your tank and the circulation of water like cities such as Denver, Salt Lake City, or even L.A. All those cities have terrible smog issues due to the geography of their location. They're all in "bowls" so to speak surrounded by mountains and the air has nowhere to go. It's just trapped. Your rock work is much the same. You only have one side of your tank to create flow from. The back and left side are blocked.
Some may debate me on this, but, the single most important thing to keeping Acros alive is flow. As frags, it's not as crucial as when they are large and/or dense colonies. Strong water flow needs to be present from all directions to bring oxygenated water to the inner tissues of the coral's structure.
Even though I run (4) MP60's and (6) MP40's on my tank, I still find dead spots in it even though I took great care to keep water movement channels open. Corals will grow and create their own flow barriers, so, try to limit the ones you create from your rock work. Fiberglass rods will help you keep the filler "support" rock to a minimum.
BUT, it you're planning a mostly LPS tank with some easy SPS here and there, you actually have a natural lagoon type shape going on that would do well by LPS.
Seth