Sure, but we can guess based on numbers that have ben provided, like the 9xxTH by 2015 (not a typo) - but remember that number was quoted when the difficulty was around 10mil. I'm pretty certain Ken can pump that hash rate out far sooner, and there is extra cash to play with now too.
In which case, 39Th would be just 10 boards a month.
Lol - we are all Maths Failing today... 39TH would be 100 boards... - although you fixed it in your 2500 boards required figure :-) Must have just been a typo.