I was in the same position just prior to the season (11 year old, 5' 100 ish pounds). I checkout out the redhead youth vest and honestly for the money, i couldnt see buying one. I looked and felt cheap to me and their were no real pockets to hold any of his calls, plus it would have only lasted him a season, maybe two and why waste the money.
I strapped him up in a Run n' gun 200 and it had enough adjustments to fit him properly and more than likely last him til he has a job and buy one he likes. Unfortunately the only one the local store had had a tear in it and if i ordered him one it wouldnt have made it in time, but I am hoping they are on sale after season and will be picking one up for him.