2005 Marlin. I have a single Raymarine C120 right now, with analog radar. I'd like to upgrade the electronics but hopefully in steps. This year I would like to add a second chart plotter. Looking at staying Raymarine so I can at least use the transducer. I know the radar won't work. I'm guessing a 12" display won't fit. Anyone have dual screens? I have the standard flush mount. I'm thinking 9" and keeping the C120 for radar for now. Upgrade radar next year.