depends on the economics of bitcoin market at that time. While you may mine less, demand for bitcoin may (hypothetically) increase so it may be valued more due to increase difficulty of mining. Overall, you shouldn't look only at how much Bitcoin you mine because the economy (real money and bitcoin) is more complex.
Ok, tnx for your answer, so the smartest thing to do, is to see how many the BitCoin is worth next year and then recalculate everything to see whether it gives profit.