Calculations show minimal torque needs on the A-10X... I am bumping torque value requirements up by roughly 20% here...

Aileron - 60oz/in
Elevator - 55 oz/in
Flaps - 70oz/in
Rudder - 60 oz/in

Now...everyone has their own servo preference, personally...I like the digitals on flight control. Here is what I used...

Aileron - JR3421
Flaps - Futaba S9202
Elevator - JR-9411
Rudders - JR DS168

Just keep your servo selection in this torque range or higher and your good. Rudders require "Wing" servos and elevator / ailerons need something in the "Mid" size. I will have a chart for servo choices available soon.
Todd