The point is CPU mining will not bring great income, I am minimum from my Alienware desktop with 1 GPU and 7 core mostly XMR is mined around hash of 100-200 Hash / sec, it will take 1 month for you to earn 0.2 XMR which is 8 USD.
My suggestion if you want seriously mine altcoin, buy a 8 GPU setup which will cost you around 1500 to 3000 USD, use it to min Zcash since it most profitable where I am rewarded 0.4 - 1 Zcash per day.