RE: Question about arrow weight and speed
You should be shooting that arrow about 285 -290 fps.
If I were you I would go to a heavier tip. Your FOC percentage is between6 & 7% which is very low. By going with a 100 grain tip you should bearound 10%FOC and speed wise somewhere in the low to mid 280's. this would be a much much better arrow set up IMO.