I am planning on running my servos on 6V. This is an electric conversion that will weigh 10 1/2 pounds AUW. I am using it for IMAC basic class. I am thinking one JR 9411SA per aileron. The elevator I am planning on using D.E.P.S. from Central hobbies and one 8411SA, this should help with balance. Now the rudder is one 8411SA enough or should i go for a 8611 it is a Pull-Pull. The manual uses some Kg for servo torque. Thanks this my first step out of 40s and digital servos.