Thinking of buying my kid a pair of skis with Marker binding system, either 4.5 or 7.5 The 4.5 is rated 25-125lbs. The 7.5 is rated 53-165 lbs.
Age 10.5 years
Height: 4' 11" (59")
Level: 6 (I'd give him a Type II)
Current DIN: 3
I supposed he's within the range of either binding,
I know you want to try to select a binding with a spring such that the setting is about in the middle. He'd be in the middle of the 4.5 now. I figure he'd spend two years on the skis. He might be up to a 4 when he's done with the skis. Or maybe at most 4.5. On http://www.dinsetting.com/, if I go one level heavier, one level taller, and up type from II to III, I get 4.5. That would likely be the absolute max he'd be while he's still on the skis.
It's a system binding so I wouldn't save them for his next skis; I'd sell the skis used when he's done with the bindings.
I imagine he won't outgrow the 4.5 in two years. I'm just wondering if, it would be worth getting the 7.5 just to be safe.