Riding in the midwest, you honestly probably have better gear than I do dealing with those winds and subzero temps. I ride maybe 3 days a year when it's just miserable, and layering up well pretty much does the trick in any situation.
Something to keep in mind if you go, is that high-elevations (above 10,000 ft typically) cause some people to have minor health issues such as nausea, dizziness, and lack of breath. I used to sometimes have this happen when I rode at Mammoth Mtn as a young kid. Your body has to acclimate to the difference in air pressure and lack of oxygen, which for some people is nearly instantaneous and others might be a day or two. If you are in good shape it tends to affect you less.
PowderHound and TreeNinja