RE: Bow speed
There are so many variables to this that an educated answer would almost be irresponsible but I'll be irresponsible just this once.
Somewhere between 200 fps and 300 fps. Now that ought to leave a lot of math out of the equation. And I'll bet I'm 100% right----for once.
There is no way to Guesstimate with any degree of accuracy. That's why someone invented the chronograph.