Cut the board a little to get up off the floor more. The board your using isn't the best for basements and not putting a pt bottom plate on the floor is double trouble. If you haven't plastered the ceiling yet I'd drop real quick and strap it. You'll never run wires in the future if needed with it that way, and your much more likely to get cracks in the plaster without the strapping. You may also consider using plywood on the partition wall under the board so no one can simply punch a hole in the wall,reach in and unlock the door. Of course if your going to alarm The room this isn't needed as much. Good luck.