I'm 5'7" and weigh 165 lbs. I'm currently on 2015 Fischer Progressor 900's in 170, which I've consistently enjoyed. But I'll be 76 next season, and I'm slowing down just a bit. So I might be looking for something a bit (but just a bit) more versatile and maneuverable in my next ski. I know I can certainly ski the 170, but would the 163 be too short? I'm not really asking which would better, just how they would be different in feel, character, and capability. Oh, and I believe I would definitely get the Protector binding. Thanks.