Have you ever considered building your PC yourself? It saves you a lot of money, it's satisfying and you get more choice of components. I strongly suggest doing so.
Are you using this PC mainly for gaming? If so, the I7 2600K is overkill, and so is 16GB of RAM. Go more for a I5 2500K and 8GB of RAM.
I'll leave the rest for the more knowledgeable people to evaluate.