Very Cool design. You could use one side with Calerpa/macro algae with light and let the rest housing fish,or for etc. I like it a lot!
I was thinking that a first Ed, but I wanted to keep all that in my sump. Its going to depend on how much of a fish room I get in the new house (pending wife's approval

) I'm also looking at making another tank that will be placed inside a bar that might be tied to this tank. Thinking on what Nate said I might have to redo my second tank and have another sump for it.
If i get some time this weekend I will build a model of this tank and bring it with us to the meeting. Thanks for the input.