Thanks a bunch for working on this -- obviously, people are into it, and it can seriously help the BTC mining community large-scale
Two concepts:
Regarding higher density boards (more chips/board):
I'll focus on the 10 Chip version for now but i will look into that.
I'm one of the perhaps 50 "group buy" purchasers, that would like to see a board capable of more than 10 chips. I think you're wise working on the first version -- a 10 chip board, solely and initially. But might I suggest, that you try/think of one that does 100 chips (or a major increase, like 10x or more). Perhaps alternatively you could provide the same 10 chip board, but sell it with economy of scale (like, just put 10 boards together with 10 chips each, but sell it for 30%?? less). I'm pretty sure 50+ members of BTCtalk would like to see something/anything like this or similar (or have some options from you), especially as/before you announce your shipping time estimates and solid prices.
Secondly, thanks for your post #102 (about "signing")... I think that'll help both you, and all the "newby's" (like myself probably!) in making the orders with you more seamless.
Best of luck, to you and us all, in this endeavor
And BTC long-term in general. 
