Looks solid to me. I'd recommend the Asus M5A99FX Pro/Evo mobo though, maybe some cheaper RAM and ditch the Corsair SSD for an 850 Evo from Samsung. Otherwise looks good though.
Personally, I wouldn't waste money on a 144hz monitor but thats your call.
There you go, the headphones will work in conjuction with the ModMic 4.0 and you will end up with vastly better quality. I found you a version of Windows 8.1 Pro (Pro isn't necessary but it what I found) for only $55. Also the AOC monitor is great, I personally have the Asus one that you were looking at and I'm disappointed that I spent that much when I could have gotten a better IPS display for cheaper. You don't need 1866Mhz RAM, so I found 1600Mhz ram for cheaper, and bumped your SSD up to a 240GB one from Sandisk which is a great SSD. Let me know what you think.
*Edit I just changed the Permalink to a slightly different one with an upgraded PSU. EVGA offers a 750w PSU for cheaper that is still 80+ Bronze certified.
Looks good, if I had to pick a weak spot I would maybe bump up to a 750w PSU if you are going to add stuff later and plan to run it hard at times. 600w is enough but not by much. PC part picker est. that build at 519 w. When you run full tilt you will be at >80%. You may also want a little overclock headroom.
i would change PSU manufacture and dump the headset.i had a razor headset and it didnt last long and was really expensive. get a corsair, seasonic or silverstone PSU at 750W. AMD is power hungry so they get hot fast. also make sure to get proper cooling like an all in one water cooler or a large heatsink.