My set up is similar to yours, for a 2 player control panel just drill 2 holes through your control panel and through the shelf on your cabinet. Then fasten with 2 bolts through your cab and into 2 Tnuts in your control panel. This will be plenty strong and it will be easy to remove the panel if want to have switching panels or need to service the Cp. With mine I ran slots in the cabinet shelf so the control panel can be slid away from the bezel for trackball games like Golden Tee that need more swinging room.