A high torque servo ways slightly more than a standard size servo. The servos may way a pound together, but a group of standard size servos ways 3/4 of a pound or more. I use hi torque servos in any plane that i 3d, even my 40 size funfly, and i garuntee it is not a brick. Also, 63 oz of torque would fly the airplane, but if you set up the control surfaces for full 3d (read 60 degrees of throw), you will get a lot of blow back. On an 80 inch plane you should use at least 100 oz servos on the wings, 60 to 70 per each elevator, and 2 60 to 70 on the rudder or a decent 130 oz servo. also the moki 2.10 is good for the plane. The wing is so large you will be hard pressed to notice the extra 5 oz. The wing is bigger than most 33%'s. Better to have a lot of motor in reserve for when you make mistakes.