is my psu good enough for this build?

The Corsair CX line is made with some inferior Samxon capacitors that do not tolerate heat well and are apparently known for early failure. I would not use one in a gamer, especially one that will put a heavy load on it. I would suggest a PSU made by Seasonic (their own, XFX, some Antec, some others) or Superflower (Rosewill Capstone).