Is my gaming build good?

That psu is unreliable. The CS series is one of Corsair's worse. You cannot overclock the i3 6100 and even if you could, you would not be able to tell the difference between 3.7ghz and 4.0ghz.

I would try to get a Seasonic S12II or M12II 430w or 520w. If not, I bet they have a Corsair CX450 or CX550. Those are fine. Avoid the older CX models though like the CX430, CX500, and CX600.