friendly advice, buy some btc and hold on them.
there is no mining equipment worth of buying.
with that money you can buy way more btc than any miner on the market can mine you in his lifetime.
I have certain amount of btc and by trading on bitstamp (sell high, buy low) I am earning in a month more than I was able to mine with 20TH in 6 months.
don't throw your money.
be smart.