I am 6'3" a nd just a little shy of 250lbs. I have an average size chest with pretty big lats and shoulders. I wanna order a blazer online and I am completely cluess on what size. I should go to the store and try them on but I unfourtantely do not have the time with final exams this week. I saw a nice 48L one online, would that be too small? I know its almost impossible to answer this question without seeing me or knowing my measurements, thanks in advance.