Justin Blank :
frag06 :
That looks like a good build. It should run games very well. You should easily get 60 FPS or higher with most games at 1080p.
I would change the PSU to an
EVGA SuperNova G2 750W, though. It is the same price, is fully modular, and has four VGA power connectors.
Like this
http://pcpartpicker.com/p/bcRnNG and any suggestion for wifi, audio(speakers/headset) , keyboard and mouse that will not bring price over 1600 us dollars(without mail in rebate)
I've heard good things about the
CM Storm Devastator Combo, but I've never used that keyboard or mouse. To know what you want though, you would need to know your switch preference, TK or not, ect.
With Wi-Fi adapters, you usually get what you pay for. Read some reviews on Newegg. If you don't have a Wireless-AC capable router, just go with a good Wireless-N adapter.
Headphones I can't recommend, as anything I recommend would be pricey. For speakers, just take a look at some Logitech's if you just use them for gaming.