my cg is 5.25 w/saito 100 . i have tank over cg and throttle servo right in front of tank against front wing bulkhead , my batt is behind tank. i have a apc 15x6 w a 2.5 in tru turn spinner.carbon fiber rods on all servos w/reverser for ele servos in rear compartment. no extra weight anywhere!!! this is a very good flying and landing setup for this plane. good luck vega76!!!