D2 great build! I have almost the exact same setup except you have a nicer tank, lights, house etc. :fun2: I got the package from TBS about 5 years ago and it is some nice rock. It is a little dense but the life on it is incredible when you first get it. Even 5 years later I have sponges, feather dusters, urchins etc pop up out of nowhere. The one thing you need to watch for is hitchhikers, crabs, mantis shrimps etc. I had countless crabs and about 4 mantis shrimps that wreaked havoc in my tank when I first set it up. If you need to get them out I recommend doing a high salinity dip (especially for the mantis they are tough bastards) to get them out of the rocks they are in. Also get ready to do lot's of water changes because of the diverse life you will get some die off. (but I am sure you already knew this)
I love the clean lines and great planning. I wish I would have thought of your ideas for mounting the vortech's that was a great idea. You will love the Itech skimmer, I am only running a 100 on my 140 cube but will probably upgrade to the 200 when I get this tank more heavily stocked. They pull the nastiest skimmate of any skimmer I have ever owned. Enough of my rambling great job, and look forward to watching your progress.
Scott