C'mon guys, this person is just starting to get interested in bowling, and took enough interest to buy an expensive ball, and now wants to learn how to throw it correctly.
Yes, it is a bit lighter than I would reccommend, but learning how to throw it correctly will make it carry and strike more than it would otherwise.
When she is throwing it good, my wife can leave solid nines with her 11lb cyclone. I've seen her do it many times.
He may later wish to get a bit heavier ball, but you gotta start somewhere. If the desire is there, he can make the necessary changes later on as he gets more comfortable with himself and the proper bowling techniques.