Keith,
Did you fit the cockpit yet? it looks like your air valve tray will be level with the RIO's cockpit floor. You might what to fully fit the cockpit first to see what room you really have in there. I had to mount my valves outboard in that position to make it fit.
I also used a button valve on the left hand forward rail, my locking cylinders for the canopy did not always work in conjunction with the canopy air ram. You could also use another electronic valve instead of the button valve, your call.