rave 450 servo arm lenghts help

[TKB357]

I am running the airtronics hot servo setup with a JR 3500 g tail servo.
I have a FBL rave 450 with V bar 5.0 system
on the cyclic servo what servo arms do I use ?
what lenghts to set the balls ?

same on tail servo what arms and ball lenght from center do I use ?

Can I run the airtroncis and jr arms ???

Thanks