GreenJacket Question

I recently got a M/L GreenJacket since my chest measurment was in the center of their range for that size at 41" but I'm 6'2" and it seems to ride a little high on my torso. If I were to get a L/XL would the jacket itself be larger/longer or would the adjustment straps just be longer? When you put yours on, where does the top and bottom of the main flotation ride? for me it's from just on/under my nipples to about 3-4 fingers above my belly button. Any input is appreciated.