Nice Aaron... it will be nice to meet you.
As for IAD its a great time, and as already stated very tough to say what will be there. Mainly common things are normally there azureus, auratus, leucs, and tincs. Anything else is tough to say. I also believe they frown on presales, but I do not have my rules handy.
The best part of IAD is the lectures, and the after hours bar talk...