RE: Arrow choice question.
I would bet that the arrows are close to be too weak (spine). Even though you didn't say, I'm guessing your drawlength is pretty long - knowing how the typical dealer cuts arrows. I would be far more concerned with that, although I wouldn't be happy with either.
The best way to find out, is to go out on a breezy day and see if you can hit what you're aiming at with the broadheads attached. Either that, or shoot a bareshaft with a field tip and see what it does compared to a fletched one.