There are better psu's for the price. Evga's aren't horrible but that's a g1 unit and the b2/g2 are better quality than their b1/g1 lineup. Maybe consider something like this one.
http://pcpartpicker.com/product/sQbp99/seasonic-power-supply-ss650km
Most people buy ram in dual channel kits but you don't 'have' to have 2x4gb. It will work just fine with a single stick and countless tests have been done that show nearly no perceptible difference in real world applications dual vs single channel. What may have a bit more impact is ram speed, maybe consider ddr4 2400 or ddr4 3000 depending on prices you're looking at. 2133 is at the bottom end of ddr4 speeds. Here's a dual channel kit at 2400 speeds for the same price as the ddr4 2133 you chose with shipping.
http://pcpartpicker.com/product/PpgPxr/corsair-memory-cmk8gx4m2a2400c14
Depending how far you're looking to overclock, a better cooler may help. Something like this in place of the 212 evo.
http://pcpartpicker.com/product/93Crxr/cryorig-cpu-cooler-h7
The yellow fan may be a bit offputting, not sure what you'd think of it. The cooling performance for the price is hard to beat though, competes with the nh-d14 for 2/3 the price.
http://pcpartpicker.com/product/pGPzK8/reeven-justice-821-cfm-sleeve-bearing-cpu-cooler-rc-1204
The 212 evo is alright, may not allow for max overclocks. I'm not fond of the way it mounts, it's a bit sloppy but does ok once it's mounted. Using one on one of my pc's, had the cryorig h7 been around when I put that system together I would have rather gone that route.
Your build is good, the suggestions were just minor tweaks to get a bit more for the money you're looking to spend. Slightly better performing or better quality parts without adding to the overall price much.
Facebook
Twitter
Instagram