belfish, I would get a profile for learning 3D. Standard servos work fine in these planes. Hitec 425's are very popular with 40 size profiles. They aren't the best but if you are just learning, you probably won't be able to tell the difference anyway. I think the best overall value for 40 size 3d is the hitec 635 servo. I have used them and I believe they offer more bang for the buck than any other servo with comparable specs out there.
You asked about what servo you should use for each control surface. The rudder should get the servo with the highest torque. The ailerons generally get the lowest. This is my newest plane. It is a kit built omp 47" yak. All servos are hitec 425's except for throttle which is a hitec hs 81.

I live in Marietta and fly at the Cobb County Radio Modelers Club. You are about 1/2hr away. Feel free to come down sometime and fly with us if you like.