Vertical Monitor suggestions, setup?

You can just buy a regular 24". That's what I have. The main thing you need to take into consideration is the viewing angles and mounting orientation. Some cheaper monitors have almost no viewing angle from the "bottom" angle, so it's possible to get a monitor setup and not be able to see it properly. So research the vertical viewing angle of the panel you're getting. Not sure what tech works best here, someone will be along with that info. My Dell Ultrasharps work excellent for this.

Regular 24" IPS monitor will do the trick.
Using a dual monitor arm with both monitors would be ideal so it's easy to reconfigure the layout.