You also realize that apart from the USB Block Erupter things, your cost per GH is the highest of anyone per GH by a factor of more than double (closer to triple)?
BFL is $45 to $55 a GH
Terrahash is $50 to $55
KNC Miner is $20 to $35
So how do you expect to be successful?
I suppose 1 H/s in August is worth 2-3 1 H/s in December... (Or March... Or whenever...)