ORIGINAL: Edgar Perez

Pick one side of the plane for the ECU, pump, etc wiring and plumbing to go.. use the other side for servo and antenna wire (don't get them to close to each other also)

Don't worry about the pump /ecu for the CG. Get them were it make sense and away from the radio stuff. Just use big batteries and put them on the nose (love those 5 cell nicads)