Nice trip but your daily driving distance is insane. 428 miles/day is ~7 hours driving per day. It's pretty much driving the whole day. I recently did 2500 miles/20 days trip and felt that I was driving too much.
7 hours? Maybe, if you never stop and never leave motorway. 8 h drive, 8 h sleep, remaining 8 h for finding place to stay, packing & unpacking stuff, eating and other necessities - doesnt leave you much time to interact with local or experience new culture.