Nice tank. I am setting up the same exact tank. No mean to hijack your thread. But aren't the returns on the outside? Mine are, I think its sort of stupid. But anyways, I went with a 30 gallon sump with a HOB diy fuge and a HOB Mantis tank. I love this tank, it's sick. I still need LS and LR. But have you seen BRS "Reef Saver" Dry rock? I think I might go with that and seed it with a small piece of actual LR. Its sweet. But anyways, sweet tank, man. I will be checkin in on you. Best of luck.
-Matt