Buying my son a bow for christmas, he is 12yrs old, hopefully he will be pulling 40-50 lbs by hunting season, dont know his draw length yet.The guestion I would like to ask is which broadhead? I have two in mind so far,both are 75 gr. The boss bullet at 1" or the wacem at 1 1/6" or maybe you know of a head that might be [ in your opinion] a better head for a young shooter. Thanks