RE: Novice needs help
Use the servos that come with the radio. They're standard servos that will have plenty of power for a .40 size model. If you buy any of the radios I mentioned then you won't need to buy any other radio gear. It will come with rechargeable batteries, 4 servos, a receiver, a switch harness, extra servo arms, etc.
You may need a 5th servo if the wing uses 2 servos. If that's the case, then just buy another standard servo like the ones you have or buy a smaller servo for the throttle and use the standard servos for the control surfaces.