ampa: 9650's in the tail and 9550's in the wings would do just fine. They're both great servos. I don't have much personal experience with it but people have reported some wear in the metal gears of the 9550. You may want to try some 9154's or 9150's if you think this is significant. I haven't had a problem with them personally and they are in fact more powerful and faster than the alternative but you may want to keep the gear wear in mind.

Happy Flying