Looks like a fine job so far. I'm still skeptical of the possible marquee shadows on the sides from those framing blocks. I would have taken the advice of your fellow byoac'rs here and removed those. But you should post some pictures of it lit up with the installed lights, to silence the skeptics like me.
How heavy is the cabinet? Looks like a lot of wood in this build, which could make this thing a beast in weight.
Also, like SNAAKE asked, what are you using for the retainers? The top one looks cool being so thin.