Day 3 looks a bit ambitious. As for day 9, it's a long drive from Bryce to Zion. It doesn't look that far on the map but doing it will reduce your time at Zion. There are a number of RV commercial CG outside the Zion gate.
Going to the North Rim of GC would save you a lot of driving time. There are CG at Jacobs Lake. Personally I think the North Rim is better because there are a fraction of the number of people visiting the South Rim.
Either way you'll be driving past the Pipe Springs NM. It's a small NM and the guided tour is something your girls might enjoy about the daily life of the people who lived there. They had a herd of dairy cows and made cheese there. Takes maybe an hour to see.