I10 from Fla to Tucson is an easy pull except thu Houston. Many great rest areas for quick overnight stays. You can & will run into storms but nothing major (most of the time). There are Casinos & great campgrounds along the way. Texas has great rest areas, as good as a campground. Winds can be a bit of a problem from West Texas to AZ border. Fuel gets cheaper the further you get away from the East Coast. Have fun!
rocmoc n AZ/Mexico