Overall, if I am correct. CoinTerra's upcoming new technology and Cex.io cloud hashing is not worth it. Simply put, you won't break even.
Assuming the price of BTC stays where it is. Which it won't. It's at $224 on BTC-E at the moment. I'm pretty sure a few weeks ago it was down around $110.
If BTC is $1000 this time next year, mining will still be profitable.