I agree that visually it is quite attractive. Unfortunately, I am human, not a fish or a coral. I like it. They may not.
You have good height and open space, but where are fish going to hide at night? Where are you going to attach corals? What are your plans for this system?
If you are planning a softie tank with just a few fish, it should be fine. If you are planning at any time to add say a hammer or torch, where are you going to put it that will give it the moderate light and low flow it needs?
If you are going SPS dominant, you have a good pattern for flow, but where will you place the corals? You have virtually zero mounting points for SPS corals.
Obviously, you have done quite a bit of work on these pieces. I hate to rain on your parade. My opinion, scrap the left hand piece. The one on the right has potential, but the other one looks far too limiting.