I think you will find that instant nose down is pretty much instinctive (it was for me, anyway). But from a typical rotate attitude to a dead engine glide is quite a big change in pitch and speed will decrease rapidly while the aircraft responds, especially without propwash. It's likely that the stall warner will accompany you all the way to the ground.
From 30' there's no time to think about flaps or ASI. Just fly the plane.
If you have time to think of one thing, make it "close the throttle"!