Flagstaff to Sedona? Safest way with a Class A + tow behind?

Another Edit. Im coming from Bluewater state park New Mexico. So Im going to take 40 W till winslow, take 87 S. then a highway called 3 going north through a place called happy jack and then one called 213 heading west again to eventually get to 179. Avoiding all danger zones of the highway guide for truckers and big rigs. Has anyone done this? Super specific i know...