As an aside: Each person should do their own research and calculations to decide if purchasing miners is right for them. That being said, the numbers I have run are based on a very aggressive difficulty ramp up, and show the units will be unprofitable after 9-10 months. That being said, in order to maintain the exponential increase in difficulty, $26 million dollars worth of hardware would need to be introduced in month 3, $54 million in month 5, $110 million in month 7, and so on. This assumes .5btc per gh/s, and there are companies slated to produce miners at a .2.
I think you may want to adjust that estimate. Recently announced projects are claiming way better than .5btc per gh/s.
Bitfury, 20btc for 120 gh/s = .167btc per gh/s
KNCMiner, 60btc for 350 gh/s = .17btc per gh/s
The likelihood that one or both miss targets, are delayed, or turn out to be a scam/failed business is pretty high.
Steamboat, could you speak to the logistics once chips arrive? I assume you separate the chips-only orders and ship them immediately, but what about when you receive the assembled boards? Do you then ship the board assembly-only orders? Then the kits? Then fully assembled? Or are you keeping with the FIFO queue between all boqrds that require assembly? Where do hosted units fit in?