We are planning a trip out west (from Rochester, NY). My current route has us staying a few nights in Lake Powell, Bryce, Zion, GC. My brother recommended staying at one of those places, like Lake P...
I like your planned stay times at the parks and I especially like your ending at Cedar Point! It'll be an awesome trip for you and the kids. However, do refigure your driving times including rest stops, fuel, lunch and add some extra hours - just in case. Things do happen.