Jim, here are my thoughts. I like the overall design. In my opinion, the top is a little thin relative to the rest of the design. I'd make it 1" or thicker. Also, make sure you like the height of the stand. Ideally you want your eye level when sitting to fall in the center of the screen. I suspect your cabinet is a little high for that. I know that for folks who wear bifocals, higher is better so that is a consideration too. My stand holds a 61" with a base like you've drawn, and my cabinet is 21" tall. Check the manufactuers stand to see how tall it is...joe