RE: Which type servos should I use in a bipe?
Unless your a great pilot doing hard manuevers and 3D stuff,the standard futaba 3004 servos should be fine if your running 2 aileron servos instead of a single like some bipes are setup for.
I will say that motor is likely going to be a bit of overkill for that plane,but will work if your careful. It might be hard to slow down if youv got a short runway like my field has and may make it want to nose over while taxing.