YS is indeed the only true solution !

servos... the recopmmendation is a minimum of 5kg per elevator. preverably 7 or more.

Provision will be made in the kit for rear mounted direct drive elevator servos so yes edible you can have 2 - 1 each side.

Rudder wil be closed loop... minimum 7kg, preferably 9 or above for expert.

re Saito
I looked at a 180 in an Edge 540 the other day and was surprised to see the recomended prop at 16x8, and as used by Mike McConville too...
The 140L is excellent at 3D with the 17x8... so what does that say for the Saito !?