I think I might be nuts and go with two servos for the ailerons and just one for each half of the elevator. I might wait for some feedback on that setup before I do go through with it. Im thinking either 5955 or 8611A's.

There will always be some failure point in any system. It seems with a dual setup on everything except the RX it should be fairly safe. This is why I opted to move to a 40% instead of getting another 33-35%. The cost really is not a whole lot more over a nicely setup 35%. I mean in most of the setup things are just so similar to how I have my 33% setup now anyway.