Probably too big; although certainly skiable. I'm about your same build (6'4" and about 180) and I have the XXX's from 2002 in size 195 from my downhill setup. Although I love this ski, I've have to say that I probably should have gone with the 185. It takes everything I have to edge down on them in hardpack, but I can do it- if only to get across the mountain to off-piste stuff. They also weigh a ton; which can wear you out quickly in bumps or a heavy snow day. That being said, that setup kicks ass in crud & floats through powder like nothing else. It is NOT a groomer ski, and because of the width and the power it takes to carve them, you should stay off of ice at all costs. As I'm in CO, I can choose not to even ski those days; whereas you may not have that option.
So- if you feel that you're pretty strong (skied for years / used to ski 210cm skinnys). coming out West for more than a week, and it's a raging good deal, I would say buy 'em.
If you're only going to ski Wintergreen 2 times this season, buy some nice Slalom sticks and put the silly notion of big mountain skis out of your head. Look at the B2's or some other midfat with a decent sidecut.