i would like to ask you guys if i have a potential bottleneck
"Bottleneck" has meaning if you say about TASKS you solve. And b/n is not only a problem of configurations, but "balance" too. If you're rich enough to buy gaming accelerator, why not invest to CPU too? (at least any i7)
"OC edition" is also not wise step: you pay more for the action you could do by yourself for free.
And hell, what a gramophone you buy in December of 2013?

It's not even a 1155 socket!
Anyway if you plan gaming, GPU/CPU/RAM is the main things which should be the first class. (RAM means SIZE of RAM, not that ridiculous Hz).