Guys Under Age 24 who have gone 50% from the floor, 40% from 3, and 80% from the line while scoring over 17 points a game:
Kyrie Irving. The end.
You need to get up to age 24, when you finally get http://bkref.com/tiny/0kdGL
3 guys -- Mark Price, Reggie Miller and Wally Szczerbiak.