You didn't provide your height.
Ski length selection is all about your height and the type of skiing (or conditions) you'll be using them for. That's right, it's not about your weight. IMO this is one of the biggest fallacies that's perpetrated over and over again by ski sales dudes and Internet ski forum self-anointed advisors (hey - I'm one of those too
).
Your weight and aggressiveness come into play when considering the stiffness of the ski flex. You want to match the relative stiffness of the ski to your ability to bend it at the speeds you prefer to ski.
Your height and the type of skiing come into play when considering the length of the ski. Your height is important because it determines where your CoM rides in relation to the ski's tips and tails and how efficiently you'll be able to apply ski pressure via your movements.
Consider for a moment two very extreme examples that illustrate my point. Would you put a 5' man who weighs 300 lbs. on a 200cm ski? How about a 7' woman who weighs 120 lbs. on a 160cm? It makes no sense and it's clear that weight should not be the primary factor in ski length selection.
OK, I'll get off my soapbox now...