Ive mounted monitor arms to the front of the desk, rather than the back, and extended them out toward me for a somewhat similar situation. Bluetooth keyboard go

Ive mounted monitor arms to the front of the desk, rather than the back, and extended them out toward me for a somewhat similar situation. Bluetooth keyboard goes in my lap, thumb ball mouse goes on my arm rest. I can extend the monitor about 2.5 feet toward my face in this way. Hope it helps