Thanks for all the info so far.
I see that this topic has many enthusiasts.

I see that most models try to exactly match the wing tips of the bird. I don't intend doing this as they are so fragile.

I was thinking of creating a tail with elevator and ailevator combination. I don't want true ailevators as the radio I will be using does not have mixing capability. I'm not sure how effective it's going to be. I need to put on my thinking cap and crunch a few numbers. I need to find some formulas for calculating force from moment, area and deflection. This is going to mean even more aerodynamic reasearch on my part.

I plan on keeping things similar to the "real" version, so I'm not going to be adding a fin. It would just look ugly if I did that. Besides, how does the real thing create yaw stability!?

I've included a picture of the tail with control surfaces.

-Q.