Rossi sas2 100 question

i blew out my leg and havent been able to ski in two years, and i need some binding advice. i ski 95% east coast park (more rails than jumps) and will probably be riding a lower din setting for the safety of my leg and ankle (big concern), which are half metal now. i weigh 170 and am 6'2", so i think a 10 din binding should be ok but i dont know enough about bindings and dont wanna get a pair thats not fitting. any words of advice are appreciated, thanks