I'll go with your setup because it's pretty much exactly what I had in mind and similar to my previous setup besides the mechanical keyboard and headphones.
Thanks for the very detailed help and providing links!
I would recommend getting 2x22 inch monitors. I work better with 22 inch monitors because my eyes don't have to dart around the screen all time time to keep track of things. Different strokes, but I personally think 27 inch monitors for coding is ridiculous and anti-productive.
Since I run Linux, this was one of the factors for choosing a 34" display at 3440 x 1440 with a "normal" pixel density of 110 DPI.