that was nice

This means that i have two optins: either have one servo for the Ailerons centered in the mbetween the two halves of the wing, right ??? ( is there a certain servo for this job, i mean with higher torque or something???)
OR
two servos on eon each wing, but in this case how would i manage to move both at the same time in opposite directions.
Am almost 90% done with my first plane and am setlling on my radio set so dont get bothered if teh questions are basic.
thanx