Who are you booked with for an outfitter and where are you going to be based out of?

Ford Creek Guest Ranch southwest of Augusta.

Thats a great area you should do well.
For starters, the rut could still be on so you have a good chance at a very close range shot in heavy timber. Choose your scope accordingly, if it's varitable keep it set at it's lowest possible settings, you will most often have the time to "crank it up" if need be for a longer shot. The ranch is close to some very opened country that is used by elk in the late season as a winter range, I am sure it holds some resident elk as well. This"open area" area would provide for some long shots if you were not able to bugle in a bull you may spot. This time of year the snow has little to do with moving the elk but if there is enough it can enhance the tracking. Most likely the early snows will just be sufficient to keep your boots wet. The herd you will be hunting there could offer a quality bull. If you ever get the chance, drive by the place mid-winter, 100's of bulls come out into the opened grass lands there to feed, I am sure you will see plenty of wintering elk photos there at the ranch. These photos offer a pretty good idea of what the area can provide for local elk size.
Orange?? uhh not my favorite subject but if I recall right the law requires 444 sq. inch's which equals the typical vest. I use a reversible one that's camo on the inside when it's required to be worn.

These two elk were taken really close to the area you will be in.

Both were from the Sun River herd. If you are interested I have some Bob Marshall photos posted at my personal web site, you can find it at Jeffalaska, it's non-commercial, just a few of my own photos.
Enjoy your trip and get some photos to show us when you return..
~Jeff~

Wow, thanks for the information.

no problem ;-)