I took your list shroudster and modified it a bit, i think this'd be a far better.
The changes are as follows:
Memory: I've seen a ton of Corsair Vengeance memory of this model fail lately, like alot, where every single one of the Crucial type i've yet to see fail... ever. I think this may have something to do with it being built completely inhouse where Corsair outsources and simply doesn't have the same QA for it.
Power Supply: I'm not friends with the Corsair builder series PSU, i've had a couple crap out on me, i've had better success with the XFX series, but purely on specs, i hate the retarded way it looks.
Monitor: I've yet to see an ASUS monitor beat an iiyama monitor in quality, and especially not the TN panel you chose vs. the IPS i just parked in.
I WOULD change the ASRock mobo too because of a bad history with them, but i'm willing to give it a go in a build really, they certainly offer value, but let's see if their quality still lacks or not.
As far as the rest goes, all components you selected seem fine, but you missed 1 thing:
Corsair Vengeance 1500 Wired 7.1 USB headset
Corsair Vengeance 2000 Wireless 7.1 USB headset
They are in essence the same headset, just 1 is wired and the other wireless, for your budget reasons this would be your best choice.
Don't go on the pure naysayers with "ALL USB HEADSETS ARE SHITE!!111oneoneone" as this is complete and utter non-sense, the Veangeance series are fantastic headsets and are by no means a wrong buy, you will be liking them... ALOT.