Making the most out of a 13" Drawing Display (Question)

Hey guys, I got a Cintiq Pro 13"HD and while it's great, some software don't scale really well with it, like krita:(This is using the minimal workspace)

And while modelling/sculpting in blender, is there a way to use my normal monitor to have more viewport with different angles?

This is really really small, I should've taken with something to scale it but trust me, other programs also don't scale well, do you guys have any suggetions? I'm taking  anything at this moment haha