The elevator and rudder servos are installed directly in the stabilizers, which is good
Makes for some very short and tight linkages.
A quality 9g servo will be fine for the elevators, more or less the same torque requirements apply here as for the CMP Hawk / T-45 :
For the rudder I might need something a bit stronger. Will have to see what I have lying around that might fit in the fin opening.
The servos shown below are actually quite reliable, I have a few and all have performed rather well.