I just had made this, and need a look at it. I have a pair of corsair 1500 v2 headsets, and say if I plug that in from the IO shield would it work or would I put in through monitor? And once I do unplug the headset will it play through the monitor or motherboard? I'm not that big of a tech dude but I know my stuff. If there is something else you would like to add please do so. Exclude the speakers I have added.
Here's what I made: http://pcpartpicker.com/p/3EoUE
The 1000w power supply is a bit overkill, you can save some cash downgrading that, unless you plan on sticking another GPU in there or something. The build itself looks good, mine is kinda similar. I don't have much experience with mid tower cases, but make sure that everything will fit in it before you buy, nothing sucks more than having a sweet build, but cant put it together because something doesn't fit.
for gaming, the you don't need an i7 and 8 GB of RAM will be plenty. This would be my suggestion: http://pcpartpicker.com/p/3Etyq
with the list i made, you are saving yourself 500$ without losing any real gaming performance. The R9 290's have come down on the price so much, that you could even go grazy and do a CFX setup with two of those, but even 1 is overkill for 1080p atm. But, i wanted to give you some headroom and went with a 850W psu. 850W will be plenty for even two of those GPU's, and whole system overclocked
And you can plug your headphones wherever you want, but you will get the best sound quality by plugging the headset/speakers directly to the motherboards soundcard, so to the I/O of the mobo, or trough the HD audio connector to the front of your case. You can daisy chaing your headphones trough the speakers also.
Audio output depends on the settings you have on windows voice manager or something. My suggestion would be to plug your speakers to the I/O of your mobo, then setting the windows voice manager to speakers, and when you want to use your headset, just plug it into your speakers, and the speakers will automatically mute themselves, and pass the signal to your headset. And once you plug off your headset, the speakers will unmute themselves and you will be good to go without any hassel.
Hope i helped :)
+1 to the power supply. You really REALLY won't need that much. You can even get by with a 650w. Find out for yourself http://www.extreme.outervision.com/PSUEngine
850w if you want to have some breathing room for, say, another 780.
As far as the audio, all you do is set your default audio input/output in windows, you can use any one of the included audio jacks, but I would recommend just keeping it simple and using the on-board audio header routed to the front panel of the case.
Also, I don't know what you plan on using the 4xaf120 fans for, but those fans are meant for airflow, not static pressure. If you planned on using them for the h100, they will not work very well. For that, you should go with the sp120's. Just two will be fine for the h100, because there is not much performance improvement with push-pull on that thin radiator.
For fan orientation, this is what I would do: 2 in the front as intake, 1 on the side as exhaust next to the 780, and the 2 on the h100 as exhaust, none on the back. The exhaust on the side panel would get the hot air of the 780 out of your case asap, which is what you want with that style gpu cooler. The included fractal fans are decent and very quiet, I'd say not much reason to upgrade them unless you really like the look of the corsair fans. No real reason to have an exhaust at the back, that along with the h100 and side panel fan would create a lot of negative pressure, which is bad for dust.
If you're going with the windowed side panel, where you cannot have a fan next to the 780, then 2 fans in the front as intake, one at the back as exhaust, and the h100 as exhaust.
The rest of your parts I say thumbs up to.
Also, if you are able to save any money, by going with an i5 and an r9-290 (which as hoocee12 pointed out, you really don't notice any drop in performance), then I would use the extra cash to get a second monitor, preferably 1440p. No need for 2x r9-290s even for 1440p gaming. Just turn down your AA (which you don't really need at 1440p anyway) and you're still getting 60+ fps in most any game, even crysis3.
Extra screen real estate is amazing, once you go multi monitor, you never turn back.
Hey, I would like to continue this convo you have skype? Mine is syriarocks.