(I have no qualms about doing 800-850 miles a day on some stretches, e.g., Northern Virginia to St. Louis, if the weather is good, and I'm sufficiently well-rested. I have done it before.)
+Added up to 15 days.
+Albuquerque to Durango is by rental car with snow tires.
Window Washer fluid should be rated to -10 at least.
Ok, next advice. I-40 from Amarillo to Albuquerque can get shut down for any storm that comes over the mountains in ABQ. ABQ talk radio is 770. There are not a lot of towns or motels in between, so if you get stuck on that road, you will probably be sitting in your car in a parking lot at a truck stop.
Next, I-40 is so long, people fall asleep at the wheel a lot. And after Albuquerque, they get on the interstate going the wrong way a lot. Make sure you aren’t sleepy and can pay full attention to your surroundings.