i think you will be fine with 40° on the ele and 40 is more than you'll need on the rest if when you fly you feel you need more you can order new stabs and ele s from wild hare

i have my ele at 50° and i never have needed it i have triple rates and on the middle rate i could do all 3d maneuvers my water falls were not too tight but adequate i only switch to the highest rate for hovers and attempted torque rolls but thats manly for the lowered expo rates not so much for the higher throws

one of my friends took the plane and torque rolled for what seemed like an eternity on LOW rates so the plane is more than capable