RE: Draw weight
I have to agree with Dave in this case. The bow should be something that fits the archer. Then you pick the other accessories to match---arrows included. There are many many more types and sizes of arrows than there are bows to match.
That being said, the average poundage shot, at least today, is about 10 pounds more than should be shot if one takes into consideration the wear and tear on the back, neck and shoulders in the long run.
Most bows have a weight range of 10 pounds. Most carbon arrows can have an acceptable shooting range of nearly 20# depending on the length. Proper tuning is also a function of turning bow weight up or down to get the best flight out of the arrow. To accomplish this the person shooting should be able to handle the max bow poundage available with relative ease. It's not a macho sport.