Do you want to spend the whole money on the PC?
It seems to not be a bad setup, (I dont know the PSU manufacturer) but its also a bit pricey, you could probably get away just fine with spending a bit less money :)
For example:
http://pcpartpicker.com/p/VXdm23
Xeon instead of i7(the selected one is less powerful than the i7 in your setup but totally enough for league and streaming), you could use the i7 from your list too.
mainboard uses the same chip but is a bit cheaper, should still offer all connections you need/want. (not a fan of these bloated mobo's unless you really need the features)
Changed the PSU to a Corsair full modular one for better cable management and with 80+ Gold spec.
And since I knew the N400 and it has a similar price I changed the case to that, thats of course preference.
Oh yeah, and switched to Seagate HDD, thats mainly my preference (too many dead WD drives in the past).
Invest the money you have left in a good microphone for example or a nice headset with microphone :)
