I actually have Ubuntu 16.4 on the previous (non Dev Edition) generation of this laptop (HW almost identical), and it works almost out of the box for the things

I actually have Ubuntu 16.4 on the previous (non Dev Edition) generation of this laptop (HW almost identical), and it works almost out of the box for the things you mentioned (needed to solve a problem with touchpad palm detection, and touchscreen bug after resuming from sleep). Of course, mind you, dual monitor support on Ubuntu (or any other linux distro) sucks (I guess it's because X is crap). It is, however, functional. You get some annoying glitches when hot-plugging monitors, etc. Sometimes apps crash when both monitors "disappear" (laptop is closed an you disconnect the external monitor). But it works WAY better than I expected.