Have you found out the cost of electricity for you where you are going to mine? If you can't buy cheap electricity for less than 5 cents and new ASIC models will be sold next year. But new ASIC models will be more profitable in terms of energy consumption, and after halving it may not be profitable for you to mine on old ASICs.
Basically we talk about $0.2, so we are far away from the $0.05 benchmark that you said. Guess I 'll have to wait...