I forgot to say that another option, and assuming your NUC type PC can act as a WIFI hotspot or you have a small hub (or ability to have a wired connection) is Remote Desktop. You can get Remote Desktop clients for iPAD, and I would presume Android as well, and of course it should be built into any PC based tablet.
I don’t think Remote Desktop takes a lot of compute power (it only sends changes), but do check performance hit if you try it.
I actually use Remote Desktop to my NUC PC when practicing in my studio as my keyrig is closest to the monitors and keyboard of my DAW PC in my studio. So I start the GIGPC (NUC) and Remote Desktop into it. So far I have not noticed any issues, but I do have a wired network in the studio.
And then I use the GeChic on stage