would this be a good binding to get if your feet are still growing because you can adjust it?

Don't get this binding if your feet are still growing. I bought these and had them mounted to my old boots. Once I got my new boots the only way to keep them without remounting them was to keep them stationary and defeat the purpose of the entire binding. Needless to say I had to spend another 30 and get them remounted for my new boots.

The adjustment moves the entire binding forward or backwards, not just part of it. The purpose of this is that you can have center mounted binding for freestyle skiing, and regularly mounted binding for the rest of the mountain without having to redrill your ski. It is not meant to adjust just part of it for sizing. For that you would need a demo binding which most retail stores do not carry for sale. With that being said the binding with the most travel is the jester/griffon. They have a huge range of adjustment for size, more than any other binding. Most bindings adjust to fit about 3 different sizes. The jesters adjust to fit more than that. Not sure exactly, but I want to say around 4 to 5 different sizes.