Dad here... My son (10) is a level 3-4 skier, but will be skiing a lot more with me this year -- free-skiing and NASTAR-style racing (UNM Corporate Cup). He has had no gear of his own... Until Dad started hitting eBay...
I won a pair of new Lange Team 70 WC boots for him at a ridiculously (obscenely? jaw-droppingly?) low price. Yes, these boots are intended for someone with a higher skill set. But, they are pretty much the only boots I've come across that are both junior and his size (10). Question 1: Will a performance boot such as this be detrimental to him?
Being that this is a 'junior' boot, I expect that the toe and heel lugs are incompatible w/ adult bindings. Searching here has resulted in a mixed bag of conflicting advice. Question 2a: Will these boots work with adult bindings? Question 2b: Is there a list of adult bindings that will work with junior boots? Question 2c: Is there a means for determining whether a binding is a 'junior'-compatible binding? (I've found that bindings w/ 'Team' in the name, or Salomon's "C###" are an indicator. What of Marker or Tyrolia?)
If the Langes are too much boot, what would be suggested for a growing kid of 5'2", 100lbs?