So I've already started thinking about next year's skis and right now I'm pretty set on getting a pair of line afterbang. The only problem is I'm not too sure whether to get the 177 or 166 length? I'm 5 foot 9 inches and weigh about 140 pounds. Can anyone help me out? I ski in wisconsin so jumps get only about to 50 feet at the biggest and i like to ski a lot of rails.