I don't think you'll find a better deal anywhere else.
For your size & weight FKS 120's are the way to go, although it might be a good idea to look at the 155's since you're probably still growing. I'm 5'11 and 175lbs and i'm glad my binding goes over DIN 12 because for park that's what I ride it at.
They're pretty much bulletproof, at least the metal heel piece for sure is. If you fall landing switch you'll just have to bend the stopper back in place. No need to go back to the shop and change the stopper since when they're plastic they usually break/pop off.
I bought two pairs of 185's from my friend and I had an old pair of 155's, and i'm basically set for life with this binding set up.