Portable monitor as second screen

[Mr109]

I'm after a sanity check. I'm thinking of adding a Vissles-M as a second screen under my 34" Ultrawide LG.
I don't have space to the sides and space underneath is limited - the Vissles should fit.
I'm thinking of dropping monitoring / afterburner / FS2020 maps / displays / controls (it's touch screen) on it. Anyone done similar or is this a blinking stupid idea?
Al

 

[Mr109]

I'm using Duet with my iPad pro and it works well as a second screen but the touch functionality is not that great, especially in FS2020 - this might be FS though.