Rudder servos for 35% edge
Depends on what is required for balance IMO.
If the servos need to be in the tail, two standard digitals are more than adequate.
If the model needs weight forward to CG it, then your looking at the belly for installation... In this case ONE jumbo is more than adequate, its simpler, less money and more robust... Scott's or SWB's stuff is excellent...
Your suggestions for servo power would be typical of a 40% model... I have owned numerous 33% model, used and abused them for 3D. Nothing more than I've suggested is needed...