Welcome to the Newschoolers forums! You may read the forums as a guest, however you must be a registered member to post. Register to become a member today!
Go with 186. At your weight in pow you want that extra length. Plus rossi skis run short. I had the 186 s3 koopman (Im 5'9'' and 170lbs) my first year in CO and I couldn't of asked for a do everything ski. I pretty sure other than topsheet change and slight width change the s3 hasent changed much. You will love it for everthing.
Maybe if your a begginer go to the 178 but I'm talking total gaper begginer.
Hope this helps.