RE: Aileron linkage
Well, there are certainly more ways than one to skin a cat, and it would help to have a picture of the plane in question in order to give good advice.
Personally I don't like to have two servos to do the job of one servo in a 26" wing. Below are two more pictures of the plane above to illustrate the solution. The plane is really old (built about 30 years ago) and it used to be rudder and elevator only. The space where the regular aileron linkage would be is therefore very limited and I wanted to try something else when I made a second wing with ailerons. With the central servo there are servo extension cables, the space needed at the position of the fuselage is minimal and the wing is really smooth, only good things in my book...
(And yes, I have tinned both ends of the wire to keep it from unwinding and it can also be shape in a Z for the control horn)