Fantastic project, thanks for all the info.
I'm really excited to borrow this idea.
I'm sold on the idea of using an iCade.
I don't have the skill set or the tools to cut my own cabinet, I think an iCade would be ideal.
It's a lil bigger than needed and you cant really do anything to to lessen the width of the control panel, but I'm thinking a bezel could help the aesthetics of it.
(sorry to ramble)........... I'm just excited.
I even did a test fit of my tablet and an iCade.
http://imgur.com/a/uRyoy#0