Two concerns -

1) Your exact dates aren't clear - late Sept means late October in Colorado.
Early Sept is a lot more forgiving weather-wise.
If you are from Gunnison it probably doesn't matter.

2) US 50 across Nevada is long and rugged - with lots of mountain passes.
It is not the best route for a newbie - esp. considering the remoteness.

Just my 2c. (Done the WX a half dozen times.)