I just turned 18 and am 6'0, so I guess I won't get much bigger than this.
I do have some 'freak' nephews though. They're brothers and one of them is 18 years old, 6'2, 300 LBs and has enormous feet, size 52 over here, I can't actually find a conversion chart that goes that far.
My other nephew, I think he really could've made a name for himself if he was born in America. He's 16, still growing, but 6'1 already, 320 LBs, size 50 feet aswell, a sick amount of strength and on short sprints, has the same speed as me. (I'm skinny and fragile, but have some good speed and big legs because of playing soccer). He really could've gotten somewhere over there, I think.
Don't know why I'm adding this, just started typing, really. Their feet size reminded me of your story.