Nice Bryan!
I will take 2 of your 250 watt ballasts if you are still ditching them.
I know I am late to the party, but I don't think you will be happy with the OM and the closed loop. I think you would be much happier with two vortechs instead of the closed loop, both with flow and ease of use.
Not all bulkheads leak, but some do, and they need to be replaced. If they are below the water line, replacing them sucks. Even siliconed bulkheads can leak, and they are even harder to replace because of the silicone. Bulkheads far below the waterline make me very nervous, eventhough people do do it. Replacing them sucks and if there is a leak anywhere in the line, you can drain your tank. We used to put the bulkheads in the bottom of tanks in the 80's, but stopped because the risk was too great. If it were me, I would seal the holes a go a different route. But thats me, and you know what my tank currently looks like
Besides that, the setup looks sweet! I am glad you are replacing your current tank with this beast and buying your wife a mac!