You should be fine with those Hitec servos. Its a big slow flyier, use your throttle on the down side of loops to keep your wings together. I am building one right now and changed the elevator using one rod down center to a piece I made hooking the halves together. I did not need to save any weight from the back as the Laser 120 makes it nose heavy. I wish I had a Saito 100 for the nose.

Carl