From the description you gave, I would recommend that you *not* buy fatties for this trip. If you get dumped upon when in Colorado, rent some. This will let you experience different lengths, stiffness, etc. of these skis.
Instead, I would recommend putting the money you would spend into a ski which you will likely use much more frequently around home like a short SL9, or some similar 12-14 meter sidecut ski. You won't believe how different they are than your 9.22's. They will take your technique up a whole level.
That said, I will confess that I do get a surprising ammt of use out of my fat skis here in the East - almost always in deeply rotted spring snow. Most people on the hill are exhausted from it - I love it. However, the point is that I have both options instantly available to me and I get MUCH MORE use out of my shortie 9.16's than I ever get out of my fatties.
One final comment. If you are bound and determined to buy fatties (ie, that will eventually probably see most of their use in heavy spring eastern snow), I can understand the attraction. In this case, I would strongly recommend a pair of 170-ish Explosivs. At your weight they are a bit stiff for real powder, but will be great for our dense slop. Skip right over the 80'ish mm skis. Between your 9.22's and the 95 mm Explosivs that I am recommending, you will more than cover the range of conditions in which 80-ish mm skis are best. I can speak with authority on this because I also own a pr of 10ex's (the predecessor to the Rex).
There are now a huge number of fat skis on the market, and one can go crazy trying to select from this group, but the Explosive is a design which has been proven over about the past 6 years and which has remained essentially unchanged for that entire time. It is the de facto fat ski of people who use fat skis a lot. For example, over on powdermag.com, there is so much discussion of Explosivs themselves, as well as discussion of Explosivs versus every other fattie, that there now is a separate thread devoted to just indexing the best of these other threads:http://forum.powdermag.com/cgi-bin/u...c;f=2;t=002561
A search on either Epic or Powder will turn up a huge number of hits on "Explosivs". Without a doubt, they are the most discussed fat ski in history.
Tom / PM
PS (in edit) - Don't worry about the stiffness of the Explosivs. My kid does just fine on a pr of 168's: http://www.epicski.com/cgi-bin/ultim...=004376#000000[ September 10, 2003, 02:04 PM: Message edited by: PhysicsMan ]