I would be a dick to these types of threads, normally, but seeing as it is 3 am and i have no need to start beef, i will answer in my kindest and most helpful tone.
the 2011/2012 saga sizing for jackets has not be released yet, but based on last years sizes, i can help you. Do you want a larger but still normal jacket? or do you want it to be a steezed as fuck jacket, like knee caps sag. i would tell you if you wanted a tall fitting jacket that you will wear for one season, get a large, cuz i am at 5"12-6" ish so i am basically at the point where Large kinda doesn't look tall, and xl is still pretty dam tall on me. All based on how tall and big you want it to be