I'm working on a custom cabinet based loosely off the Project Arcade system.  It's going to have a LCD HDTV for a monitor...everything looks stunning.  But, that said, I want to get in there in case I need to adjust things.  I'm just concerned that it might impair the structural integrity of the cabinet.  It's going to be built with 3/4" MDO, which I understand is strong and light, and the HDTV is only 20lbs, so I'd think I'd have more flexibility with the structure.  So, I was thinking of perhaps putting the angled top section with a hinge so I could lift if up if necessary, and then, have the rear panel open like the front panel will with euro hinges or something.  Any suggestions on things I could do to help stabilize, if needed?