That's almost impossible to answer. My 10 year old daughter may be taller than your 10 year old son. They also may have a drastically different stance. Best thing you can do is bring another, more experienced goalie along stick shopping.
Depends on how tall you are. Just get one that feels comfortable when you are in position. But get one a tad longer than you think you need since you are taller on skates.
On What year and model, size of the Eng?
yes that is a good size
1959.
Mikka kipersoff
a good size quad for an avrage sized 12 year old not a fat one is a 125cc for kids
if your a 8 to 12 year old then get a junior 13 and up then senior stick. cut it were its the length of your chin.
Van Der Sar
Small
Hasek, 1991
i dont know about ever but he is a very overrated player. People dont realize that goalies in the nhl are mostly a product of their teams. if your on a good team then you have good stats and thus people call you great. if you watch brodeur he is a good goalie but not great, and to be honest recently he has been bad. in last years playoffs, a loss to the rangers, he put up maybe the worst performance by a goalie i have ever seen (respect to lalime). This year he was not as bad in the playoffs, but definitly played like a below average to bad starting nhl goalie.
depends on how "big" the four year old is