Should work out pretty well. Your $700 total isn't right, lots of mail in rebates in that list, and we all know how that goes.
I would swap the hdd for an ssd, unless you need the storage space.
http://www.newegg.com/Product/Product.a ... 12K1RJ7416
750W power supply is overkill! You could get something smaller and save some $$$. You are looking at about 200W peak power consumption if you aren't overclocking.
http://www.newegg.com/Product/Product.a ... 6817139049
(Video Conversion - x264 HD Benchmark)
http://www.anandtech.com/show/7189/choo ... ber-2013/5
Some advice from my own personal struggles with setting up a dual pc streaming setup--
Since I see people rate this capture card poorly because they don't understand the wording from Avermedia. If you are using their software it will use very little cpu, if you are using OBS/XSplit/FFSplit/etc. you will be encoding on the cpu when using x264. If you aren't using overlays/notifications/etc. on your stream, just use their software if low CPU usage is important to you. You can also use QuickSync or NVENC if your hardware supports it, but the quality of those, even at 3500kbps is pretty terrible compared to x264 at even lower bitrates.
Another common misread is the FPS, people see 60fps Input/PassThru and mistakenly think it can capture/stream at 60fps.
For the mic I use two, the nice one for my stream, which is an Shure SM58 with an xlr-to-usb adapter for the stream audio, plugged into the streaming pc and setup in OBS. The other is on my headset, A40, I use it for ingame chat and hooked to my gaming pc.
EDIT: I don't use the same capture card, I didn't realize it has audio in/out. That makes it very easy to deal with! I would stick with my current method either way tho, I like the audio quality from my sound card -> headphones.
You can ignore the wall of text below this.
Setting up the sound with a dual streaming system can be a little tricky. Since you chose a capture card that has instant preview routing the sound in whatever way you like should work without a problem. Personally I like to do this with software called
VoiceMeeter (DonationWare), I push the sound out to the HDMI and my sound card. This avoids having to split the audio with wires, which can lead to some issues and ties all the volumes together. With VoiceMeeter you can push out to 3 hardware devices and 2 virtual devices at the same time, all with their own independent controls. You can also
VirtualAudioCable ($25) to accomplish the same thing, just not as nice looking and confusing at first. You can also use the built-in windows StereoMix to "listen" to your computer sound over the HDMI. This can be problematic, for me it would cause an audio delay in the stream that wasn't consistent, so I couldn't account for it in the capture software. Yet another way, if your monitor has a sound output, you can plug your headphones in there and push all sound to your HDMI. A more expensive route, getting a hardware mixer, personally I don't like all of the wires.
Lots of fun things to consider when doing a dual pc setup.
