This question is posted pretty frequently here, and the answer will never change.
Bitcoin mining is no longer profitable in any capacity. The only way you are going to make a decent chunk of change with Bitcoin mining is if you get incredibly lucky by picking an alternate coin that has a low difficutly level and increases in value rapidly. With the current difficulty levels of mining Bitcoin and other similar coins, you would ultimately be spending more in electricity and utility costs than you would be earning by selling the coins you are mining. Furthermore, the upfront cost required to build a rig that would get you even remotely close to breaking past that margin is stupidly high.
In short, if you REALLY want to mine, find an alternate coin with a low difficulty level or don't mine at all.