Looks like a fantastic trip!!! Have fun!
And that is a very doable trip that can be quite enjoyable!
Way back in the dark ages of the '70's my mom threw me in a Chevy window Van and we went from South Florida all the way to the Pacific northwest over a 3 week period one year and a four week period 2 years later, that trip included British Columbia. Went to many many NP's and saw countless sights that I treasure to this day! Never once did we feel "rushed"!
Your girls will remember this trip forever!
Beau & Sue
2015 Coachmen Catalina 303RLS
2016 Chevy Silverado LT 2500HD Duramax
The more people I meet, the more I like my dogs!