Seriously though, how much do you move with your development computer? I can't imagine being productive without at least two large screens and a fullsize keyboard and trackball anyways..
I have a similar setup to yours, but end up working (for my job, or for personal enjoyment) more than half the time on a single 14" screen, wherever (kitchen table, my couch, someone else's couch, outside, ...).
For some kind of work, I find the extra screen space very useful, but for other tasks it ends up being distracting.
Having a light, quiet laptop that keeps itself cool and has a long battery life is what makes it possible.
And when it's not enough, I can plug a single usb-c cable and have it charging, and connected to a keyboard, mouse, two screens, gigabit ethernet and speakers/headphones.
Seriously though, how much do you move with your development computer? I can't imagine being productive without at least two large screens and a fullsize keyboard and trackball anyways..