Our trip to ORE St George, Bryce, Zion & north rim GC was in May. Cedar Breaks natl monument looked beautiful but was almost completely under snow so we could only peer into it from the top; Brian Head had a bit of snow, and the cool air so refreshing - because it was suffocating heat of over 100 degrees in Zion, and St George was almost that. North Rim Grand Canyon was just opening up that week (we'd rented a cabin there for a few nights). It's difficult to see it all in one week, especially with so many climates!
Kodachrome was very beautiful, and that entire Scenic Byway 12 and all the other parks it leads to. I've always wanted to go back and spend more time. Don't know if we'll ever make it at this point; I'd considered Brian Head for that purpose, but great to know about cabins in Kodachrome.