RE: Advice for young hunter...
I wouldn't do it, but if you did I would go with a heavier arrow for the momentum. I would agree that 30 lbs may get the job done out of a specific bow or set up. However I think we are over looking the draw length. 30 lbs and 21 inches of draw! That is a VERY light set up. That would be like hunting with a 30 lb crossbow. I wouldn't want to try it on live game, especially not something the size of deer. If you do let us know how it works out.
I'm sure it would work, I mean you could kill one with a .22 if you wanted to, I just wouldn't try it is all.
Good luck,
Paul