My husband and I have planned a road trip this fall for our ten year anniversary. We will have 4 weeks, we leave the last week in September, returning October 23rd. We plan to travel from Detroit MI and hope to see the Badlands in SD, Yellowstone & Grand Teton, down through Utah to Bryce Canyon, a day in Las Vegas, the Grand Canyon, through Arizona, New Mexico, up through Colorado and back home. We plan on camping and staying a few days here and there. I have tried to plan it so that the first two days out to SD are the most driving intensive and then we travel in shorter spurts from there. Question #1 is this too many places??? Question #2 What kind of weather should we be planning for, do we need chains and snow tires on our van????