I have used an iPad in a keyboard/case combo that was absolutely fantastic as a form factor, but I'm not sure that would meet your needs based on the applicatio

I have used an iPad in a keyboard/case combo that was absolutely fantastic as a form factor, but I'm not sure that would meet your needs based on the application. Maybe a different tablet device that can run Linux or an Android variant capable of providing the tools you require. A nice thing about tablets is instantaneous sleep to on even vs. modern desktop OS.