If you were to receive for S7's today, in about 40 days, you'll likely be losing money, just in running costs alone. The electricity price of $.22 just won't work for you. More miners won't help, only lower priced electricity.
Sorry to give you the bad news, but better to understand it going in (i.e. before Bitmain delivers a dozen S7 miners to you).
When you say that in about 40 days I will be loosing money , are you reffering to the fact that new technology will be available on the market that will make the S7 somehow obsolete ?
What is an acceptable power rate in order to perform some profitable mining using the S7 ?
I am a risk taker by nature , and This is my first contact with the cryptocurrency world which is gaining some serious momentum worldwide and I don't want to miss out .
no it's because of the diff, current farm will keep adding other s7 to their already vast number of asic, to be competitive and be on top, this mean that you will lose money if you don't upgrade yourself your farm
acceptable power is below 0.1 but it would be better if it is below 0.05, until new efficienct unit, more efficient than s7, come out