I don't mind when people post plans up in the Project Announcement Forum. After all, he is announcing a project. Feedback, I'm sure, is what he wants before cutting wood. And besides, at least he didn't post in the main forum.
As for the control panel -- good plan but if you're not going to be adding anything else to that I'd lop off a couple of inches, especially for a desktop controller. Besides you can always make different ones for different needs in the future.