Since the laser 4 doesn't have dual rates, I think the thing to do would be to mechanically set the throws to the recommended high rates and then dial them down to the recommended low rates using the ATV. This way you won't have to re-adjust linkages when you're ready for more control authority. To increase throw, move the linkage in a hole on the control surface horn and out a hole on the servo horn; vice versa to reduce the throw. The difference you have in the elevator is probably ok, and more rudder throw is better than not enough, generally speaking. Having said all that, I would recommend you take the plane to the field in its current state of adjustment and see what your instructor has to say. If adjustments are needed, it should be a quick and easy operation to perform. Good luck!