Thinking of a Budgeted High-End-ish
Everything looks good except for that Corsair RAM. It is not good. Highly suggest G.Skill 3600 or Crucial 3200 Ballistix Sport LT and overclock it (very easy).
If I had to choose, I'd say RAM is probably the component I know the least about in terms of performance. It is pretty much just "Yay big numbers" on that for me.
I'll look into the ones you suggested
Could you manage to go 4x on the RAM? take advantage of the memory bandwidth on that CPU. Look at GSkill memory, it has served me well.
I do really like the rest of it. Nothing seems out of place.
Here is an alternate monitor, just in case HP 27xq 27" 2560 x 1440 Quad HD 2K 1ms 144Hz