NauticaMen's Melton Double-Breasted Peacoat

Q: Im 6”ft tall 200lbs what size should I get is XL ok?

I'm 5'11 190 and just tried on a Large at Nordstrom's -- it was quite tight especially in the shoulders over a dress shirt only -- I'm looking for an XL so i can layer under it. That may make the sleeves too long I don't know - they were perfect for me on the large