Ok, important to know your monitor's native resolution and some of the other info from the sticky'd template.
Right off the bat, there's a big mis-match between your CPU and GPU. The 730 is going to struggle with a lot of current games, while the i5-4690k is overkill, by comparison. You may be better with a Intel Pentium G3258 Anniversary Edition, which would let you upgrade down the road, and is still very OC-friendly. That or switch to a AMD FX platform. With the saved money, you want to bump the GPU up to a GTX 760 or R9 270X.
I'd also lose the Closed Loop Water cooler. Check out the Noctua NH-D14, or if you're not doing too much of an OC, the much cheaper Hyper 212 EVO. The problem with water cooling, is you still end up with a loud radiator, more work to install, and the rest of the mobo isn't kept cool as the CPU. All for a very tiny bump in cooling, compared to the air cooler.
If you can squeeze in the budget, I'd add a SSD. Everyday computing is much more responsive, and the time it takes for game launching and loading is cut into a tiny fraction.