I'm thinking about getting a Sterlingwear Authentic Peacoat in Navy, my only issue is the sizing. I've already searched SF for full measurements, but I couldn't find any. 5'9", 145 lbs Chest: 38” Arm (CB, held straight): 32.5” Waist: 31” Hip: 36” Arm circumference: 12” Shoulder: 17" Would a 36R fit? I've been told to size down (and that SW's size guide isn't accurate). Does anyone have measurements for a 36R, or have similar dimensions and would like to offer some advice?