To answer your question: raspPI will work, as will any other device that runs linux or windows and has at least an usb2.0 port.
I run my stickminers on an old neolinux HP thin client, even without a powered usb hub...
Don't know how many miners one hub can power...
I'll upload a couple pics from my setup when i get home from work this evening (and if i remember)
EDIT: about the display... Sure, but personally, i just run cgminer within a screen session... I open the system over a terminal, open the screen session and see if it's still mining from my laptop.
EDIT EDIT: about the software: either run minera (it contains the necessary software), cgminer or bfgminer... It can be run from linux, unix and windows (with windows you need some extra drivers). Tutorials can be found with google. If you use geccoscience's stick, please make sure you download the adapted minera version, or download the patched cgminer files before building cgminer