I have never experienced the nose dropping on my Flash either. I flew my Classic Flash 90 flights or so on a Rabbit and it was a pure joy to fly with that power setup. Just keep it as light as possilble with the Rabbit and you will love it. I didn't even use the wing tank as the Rabbit is so good on fuel burn. My setup was pretty much what Dave has noted. 221/2 degrees of takeoff flap and 45 degrees full landing flap. I had my crow set to 6mm (to suit my flying style) but 10mm works just as well. Speed with the Rabbit was around 175 - 180 on a level pass and vertical was quite good.

I now have the Flash powered with a Cheetah which makes the plane a lot faster but also a bit more difficult to land. Also uses a lot more fuel. It would be really hard for me to pick between the Rabbit or the Cheetah in this plane, just depends on your type of flying.