I just use it for light gaming such as wow, d3, cs go. What do you guys think should be my next upgrade?
Personally, that SSD is a little small... It should probably be 240-256GB instead and only incurs a $20 bump in price . That particular PSU is more expensive than it needs to be sticking with a tier 1 unit (save you about $40 easy). Also, you can get get faster RAM for the same price as what you picked. Graphics wise, if you wish low power, current market says the GTX960... performance says... Radeon R9 380. So, this build actually saves you some cash and gives you better performance.
PCPartPicker part list / Price breakdown by merchant
Here is an improved list IMO, you don't need to buy an K series i5 as you can BCLK over clock the regular i5 and it performs very well. This build also has a copy of windows 10, not sure if you need it or not. if not you can save an additional $95.00 off this build cost.
here is a video on this subject: https://www.youtube.com/watch?v=MrfTcXQlsbs
The R9 390 and GTX 970 are close but I feel the R9 390 will age better with 8GB of V-Ram over the GTX 970's 4GB ( 3.5GB )
bench mark video compairing the two cards: https://www.youtube.com/watch?v=udXCusTnRsY
The Phanteks Enthoo Pro M ATX Mid Tower Case is gorgeous and has had great reviews.
Anyway have a look I think you will like the revisions. All the best with your build!