well i'm not sure how many of us there will be but i think we would rent a cabin if possible.
in terms of what we ride. i have 2 doo revs a 600 and 440x. we do a good amount of off trail, ungroomed climbing and screwing around. as for other sleds, there is a renegade, switchback, couple other doo 600 121's and other trail type sleds. we use the 121's in the deep around here, its not where near the pow you see out west but its no easy task to get through the off trail snow with the 121" x 1" lugs. my 440x with the 1.75 lugs is better but still not easy, but it is easy to get stuck.
People rarely ride alone in the mountains. Why, safety. Avalanche, get lost get stranded, storms can come,a cloud could hit the mountain and you can't see 10 feet.
Was riding back in February went over the crest and dropped down into this snowing soup cloud with visibility of a few feet. Made it back to the other side and really enjoyed it.
It is typical to ride with several people. So you have to ride what they ride something similar so everyone has a good experience.
Experienced riders ride a 700 to 1000cc sled. A 600cc sled is an entry level mountain sled. But I must say a newer model past 2005 has suspension/ fuel management / gear advancements light years beyond the older sleds. A 1999 year 800cc sled will not handle or keep up with a 2008 600cc sled because of throttle response, handling etc... but there is rider experience.
So on a flat away most cc sled are the same but out here when you get into the mountains then track and engine size make a difference. And the biggest input is rider experience.
Lots of guys on here will tell you on the mountain it is common to only have one ski on the ground and the good riders have the both skis off the ground for great riding. Not that they are acting crazy but to be able to maneuver in tight places you need less of the sled on the ground. All the while messing in powder from a foot to several feet. That is why you need the horsepower and track size and the experienced riders will tell you your best friend is the throttle.
When in doubt throttlle out.
So when you do go riding a nice ride would be a 600 cc 144 but to really experience western riding I would look at a 700 cc sled and maybe ride an 800with experienced western riders around you. Plus most places will rent air cooled to anyone , 600-700 to unknown riders and 800's to the choosen few.
So when you go looking aroiund for places to visit the type of machines will tell you what conditions they want you to ride and not what the area terrain has to offer.
Exceptions are off course legal liability. Like here in California where most insurance companies tell shops to require renters to keep the sled below 25MPH. My personal sled would overheat if I rode under 25MPH to powder but i would be lucky to be going 25MPH in 4 feet of powder.
So to conclude look at what sled clubs ride in the area while looking at what rent shops have to rent.