I think you are going to have a hard time finding all those qualities with that set up. You might hit that speed with a light arrow. I think I got close with my Mighty Might at 60 lbs and 26 inches of draw. I think the arrow was around 300 grns or so though.

I think you are asking a lot though in wanting a light set up to shoot that fast yet draw smooth and have no handshock. I would also suggest looking at a bowtech. It will depend on the draw weight as well. 70 lbs at 27 inches might get you there, I don't know how smooth the draw will be though.

Paul