Socaltoaz,
Sump looks awesome and I'm sure that skimmer is going to perform excellent. As far as the drain goes, I'm going to disagree with the "Let the experts choose the drain". I would demand a beananimal. The Herbie drain is a solution for the standard Durso 2 hole reef ready tank you buy off the shelf at your LFS, because those tanks have tempered bottoms the third hole cannot be added. Don't get me wrong, the Herbie works well to convert a Durso to a Herbie, but for a custom tank like this it makes absolutely no sense to setup a Herbie. You're not trying to change a tank from its fixed state. Herbie himself has even stated on here that bean's design is superior. And here's why...
If you set up a Herbie, 1-Full Siphon Drain and 1-Emergency Drain, the water level will fluctuate in the tank, this will cause more water to enter the display and start pushing water over the emergency to the point where you'll have to adjust the gate valve on the full siphon from time to time. So this system will always have to be adjusted, which in my opinion is a pita. Now, some people will run there emergency drain wet. In other words, allow a trickle of water to flow through the emergency to take on the extra water that's sent to the tank. The problem with this is eventually it will become noisy, but even worse, since they're running it wet there's a greater possibility of algae, sponges, snails, etc. entering the emergency drain and increasing the chance of a major flood if the full siphon drain clogs and the emergency was already compromised through the use of the trickle.
Conversely, this does not happen on a beananimal drain. On the beananimal drain you have a full siphon, an open channel and a "DRY" emergency drain. The open channel takes on the trickle to handle the fluctuation of water in the display, but also has an airline trigger that once it's occluded from a clog on the full siphon it will convert to another full siphon. But because it was always a wet drain, there's a higher possibility that it too is compromised and so we now have the dry emergency as our final drop dead last chance to avoid a flood, drain.
The beananimal drain is silent and ultimately fail safe that does not need to be adjusted from time to time. It's pretty much set it and forget it.
Here's bean's thread. I would do your research on this because it's important and there's no going back and changing it once it's done.
http://www.reefcentral.com/forums/showthread.php?threadid=1310585
I'll also add that some people on here will argue, "It's rare for a drain to clog, mine has never clogged." This is pure nonsense. That's like saying, "I've never been in a car accident, so I don't need to wear my seatbelt." There's plenty of folks on here that have experienced a clog, in fact some have shared how their bean drain saved them from disaster and others have shared their misfortune.