Rudder --DS 8401(not the 8411 with metal gears)----it has a very narrow deadband though--so slop -free linkage/closed loop is essential --or it will "hunt" the centre.
Elevator DS 8231 (one only) 2x DS3421, or, cheaper, 2xDS811.
Aileron---you could use the futaba 9102 still, esp. if you have them already---just don't expect a long pot/track life with the YS---some people claim that mounting the servo on its side inside the wing helps in this respect.
The best JR, IMO, is the DS9411sa, but it's not cheap, but the 9401 does well--or even the8401 again.