I am in the exact situation here.

We have a cheap power here with a  rate of 2 cent per kw, and we are start to build our own farm. When me and my team decide on which gear to go with then at the last step we make a new  decision to wait for more 2 months to see what will go on with the new gears that we expect to come out next 2 our 3 months from now.

I advice you to wait a little bit, because it better to have a better deficiency than to be sorry.