Mitochondria wrote Storage: [ Register or Signin to view external links. ] ($149.87 @ OutletPC)

Ew no, 850 EVO is the exact same price.

Mitochondria wrote EDIT: added the ultrawide, you can keep your current two, it is just nice to have a little more room, with a near perfect sRGB color accurate, panel

Meh, he already has 2 x 1080p Dell monitors so an LG ultrawide would be a bit out of place maybe. Hence why I recommended a nice IPS 4k Dell monitor, but he could get a 1440p Dell monitor maybe, might be a nice middle ground;
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U2515H is a beautiful 1440p monitor, and he can easily fit an R7 1700, this monitor and a GTX 1070/1080 within his budget. Or another monitor option;
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TN and 24", but G-Sync and 165Hz at 1440p. You're really going to want a GTX 1080 paired with this monitor.

TeKz wrote DAMMMMMNNNNNNNN 6TB of storage (personally think that is a lot)

Yeah, I don't quite think you need 6TB. I'd probably add in a 2TB or 3TB HDD, and you can always add more storage later. I'd be more focused on getting that 500GB 850 EVO first though.

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CPU: [ Register or Signin to view external links. ] ($289.89 @ OutletPC)
Motherboard: [ Register or Signin to view external links. ] ($144.95 @ Amazon)
Memory: [ Register or Signin to view external links. ] ($156.99 @ Newegg)
Storage: [ Register or Signin to view external links. ] ($149.99 @ B&H)
Video Card: [ Register or Signin to view external links. ] ($534.98 @ Newegg)
Case: [ Register or Signin to view external links. ] ($89.99 @ SuperBiiz)
Power Supply: [ Register or Signin to view external links. ] ($74.99 @ Amazon)
Monitor: [ Register or Signin to view external links. ] ($319.99 @ Best Buy)
Total: $1761.77

Kept the motherboard and RAM you like, plus the 500GB 850 EVO. Spend the extra $70 for the 165Hz monitor if you want, or drop the GTX 1080 to a GTX 1070 and grab the $480 4k monitor. Alternatively, you can get a nice LG 4k monitor for $350 but I tried to stick with Dell for monitor since that's what you already have. Again, 750W is plenty for SLI GTX 1070s or GTX 1080s, and the Capstone for $75 is a great price. You can get a fully modular, slightly better 750W PSU for $20-30 more if you really want. Seasonic Focus, Bitfenix Whisper, EVGA GS, or G2/G3 are my go to's.