Jonboy

I agree with the rest go for separate systems.

I installed 3 separate tanks on my FEJ Rafale each as separate systems with 3 fill valves. This does at least mean if the doors or brakes leak you can at least get the U/C down. Personally I would not put the gauges in the plane, they are just something else to leak. The pump will have a pressure gauge. Do spend plenty of time thorougly testing the door rams under water especially with them fully extended and applying pressure from side to side. I could not get mine to work reliably leak free and fitted UP cylinders which were perfect. My retracts were fine, but others have had leaks again, check with them out of the plane.

John