I have no problems with Hibernation and XA-300.. although Media Engine doesn't show up again after hibernation.. that may be the problem. I just turn off the computer every time and start it up every time.. takes about a minute or 2.
The LCD is attached with a custom C bracket. It is mounted in the same hole where the sun roof controls where screwed in.
Why do you recommend a case for the mother board? It will be going in the trunk area in version 2.. but what could happen with it mounted on the peg board?