There is no one-size-fits-all answer. Pixel says yes, but he doesn't know anything about you, so he really doesn't know. You need to figure out the numbers for yourself. If you can't do that, then you shouldn't be mining because you need to know if you are making money or losing money as the situation changes.
Difficulty will skyrocket soon, you can't rely on current profitability ratios for any timeframe outside the next few days.