Even though that power supply is more than overkill, I really like the build overall. Very similar to mine in a lot of respects. Stuck with the same case, motherboard, and even the graphics card. Originally had a 850 EVO myself, but it was a defect and ended up having a complete read and write failure after 6 months of use.
Bit of an overkill on the RAM too, but I can't complain. Sweet radiator, never done much for watercooling myself, but looks really nice! Plus, I REALLY WANT THAT MONITOR!!! It's stupid expensive, but I really hope you're getting your enjoyment out of it!
Also, bonus props for the pups :)