no way taking too much time. I'm so happy to see you getting a raptor back flying! I'm sure the servos will be just fine. I've no experience with the DS620 but did look it up. the speed should do just fine as long as you have it hooked to 6 volts. (Most futaba rudder servos require 4.8 volts and would need a voltage regulator on top of the align regulator. I'm telling you that incase you change the rudder servo to be aware of the volts required). your futaba s3050 are okay at 6 volts. and are great digital servos. The throttle servo doesn't need to be special and will 100% do the trick! Long story short, I think your servo set-up is good.