As an enthusiast myself, I always love to see what and why people are using in their builds. Hope you don't mind my commentary or me picking your brain!
First and foremost, for that powerful of a processor, I might advise the consideration of water cooling. An AIO liquid cooler is often just as expensive as a nice air cooler, but can be marginally different in terms of load temperature. You may not see a difference at all times, but in terms of overclocking (I hope you plan on overclocking...) or heavy stress, water cooling could be immensely beneficial.
Let me just say that I'm enormously jealous of your RAM, SSD, and HDD! I have a fraction of the space you will have and would
love to upgrade!
If you have the room for a larger case, I would suggest the Corsair 750D. I personally have the airflow edition of the 750D and absolutely love it. With the amount of hardware you'll be putting in this beast, a full tower case would come in great handy - especially for cable management. Another scenario to consider, if you opt to buy a liquid cooler with a larger radiator, it's harder to find mid-tower cases that will supply enough clearance to comfortable affix all of your hardware. Just a thought!
As you noted, your power supply is quite overkill. I opted for the EVGA SuperNova 850w just to have plenty of power when I needed it, but I never get close to that maximum. I understand the need for breathing room, but quite frankly, any power supplies over 1000 watts are unnecessary, in my opinion. Most hardware won't come within the maximum wattage and they're expensive as all get out. Unless you're planning on trying out VR with your 1080 SLI configuration, I would suggest only using one card. SLI configuration for VR is great because each card processes each eye, ensuring a very smooth and enjoyable experience. However, when playing regular games, you really won't see a major difference in performance. If I remember correctly, SLI doesn't enable both cards to simultaneously process the graphics, but rather enables a single card to process while the second card handles the graphics buffering. You may see a performance boost in terms of AA or enhancers like hairworks, but other than that, you won't simply have double the performance under all circumstances.
Otherwise, this machine is going to be a beast! Congratulations on your first build and I wish you the best of luck.
I suppose the only people who purchase operating systems are those who want simplicity and validation, haha. The 1060 wouldn't be enough power because, given that he is planning to buy a 144hz monitor, he'll want to shoot for the maximum amount of frames as possible, meaning that the 1060 would be
way less than necessary. From what I remember of the benchmarks, the 1060 struggles to maintain 60 frames per second, and that's not even on ultra settings. I totally understand the desire for an aesthetically pleasing machine, as I have a black and red design to mine, but sacrificing performance for "swag led-lights and some custom colored PCI" seems like a poor choice. I suppose he could afford the extra cable sleeves and LED post-build, given his budget.
If you're looking for LED light strips, I would suggest the
NZXT Hue+ paired with the
NZXT Hue extension kit, if necessary. The control box is sleek and mountable, but most of all, extremely easy to use. In regard to the cable extensions, the purpose of them is to match a color scheme. Rather than plugging your ketchup-and-mustard cables into your motherboard, you could buy sleeved cable extensions that match a color scheme (red, for example) and look much nicer. I would suggest the BitFenix Alchemy cables if you really want wonderful results. They sell them in large sets such as
this one, or in single-purpose sets such as these
sleeved fan extensions. A decent job of cable-management matched with sleeved cables of one color can really add a nice touch to your build. For example,
this computer has ketchup-and-mustard cables, i.e., the default red and yellow cables being plugged into the motherboard, whereas
this computer has green and black cables to match the color scheme of the build. Cable extensions can be bought for PCIe cables, fan extensions, 24-pin power cables, SATA cables - any interchangeable cables in your computer.
I hope this helped a bit!