*Please not the GTX1080Ti is supposedly launching at $700USD and can get 35% more performance than a GTX1080. Also has 11GB of VRAM.
We do need more data on the cooler, but the "Founders Edition" apparently doesn't have a premium so I'm curious how the BLOWER STYLE will work because they've redesigned it to use a Vapor chamber and other changes. If they can keep the noise down and performance up relative to something like a larger Asus Strix 3-fan that would be great.
So it's hard to justify a $600 GTX1080 at this point, though you will have to wait and even after launch availability will be LIMITED.
OTHER:
I otherwise like the overall build, though I'd make one change at least. The PSU. I'd upgrade that to a 750W EVGA G3. Not due to POWER requirements. NO. But because ECO MODE kicks in at 50% usage and you'll go above that.
So ECO MODE won't disable the fan when gaming with that build. A 650W might (probably as CPU is not overclocked, though probably not for GTX1080Ti), but a 750W will for sure.
OTHER:
You can also WAIT and see if the GTX1080 prices drop. They should, but there really is no guarantee. It depends on stock, and how much pressure there is. The GTX1080Ti may be in short supply which may not affect GTX1080 pricing much.