This is a tough question, there seems to be a lot of different opinions on this ski. I'm 6'1, 208, and I own the 178. I probably could have gone with the 172. But the 178 comes up to roughly the bridge of my nose, and that's what I typically look for in an all mountain ski. Plus Peter Keelty from realskiers.com recommended the 178, and he is about my size. My guess is that, judging from your description, that the 184 would not be too long, but a lot of that boils down to personal preference. And there's no benefit to going longer than you have to. But I wouldn't buy the 184 just because it's a bargain. Last time I looked, there were plenty of last year's brand new leftover 4x4's w/bindings floating around in the $450-500 range. At that price, it doesn't make much sense to buy used, unless you are really getting a great deal.