Wow that skimmer looks awesome. Spazz rocks.
Another skimmer you should consider is the H&S A300 3x1260. Its a grand less than the 1003, and uses the exact same pumps. More durable IMO and many others. There are a few here in the LT forum, I can post pix of mine if you want (when I had it). Replacement pumps are only $299 if you need them (unlikely). If you want to go to $3K I'd recommend the BK400. I had the 300 and I doubt it could keep up with such a large system - but the 400 probably could. Despite what the haters say, BK is the best skimmer made IME, period.
I have no idea what Spazz is charging but I would consider his skimmers. With certainty though the A300 3x1260 would be enough and is around $2,200 or so?
Edit - I'm only speaking of NW skimmers. A friend of mine is on this forum, sidewinder770, check out his Barr beckett. It is an absolute monster and very well priced. His tank/system is about your size and it keeps up great. If you have a fish room and electricity is no issue, you should consider Barr.