Edgeman is right, the Goldberg bird is heavy compared to others now available. The Mojo ARF is the most advanced and the newest of ARF profiles and very light.

OS 46 has good power. You can zoom it up by removing the baffle in the muffler or go with a Ultra Thrust muffler.

The wood 11-4............it will depend on how much the planes weighs in the end, however you may want to look into a wide blade prop like what APC has to offer.

What Hobbico servos? Mini servos may work, if they have the torque. For a 3D plane, you want large amounts of throw to direct the thrust and your servos must have the torque. Easy way to increase the torque, run a 6 volt battery.