There are many places to do all of the above. There are many guide books and maps available for that area. Good for you on your booking for the Chalets. The Park shuttles are good enough for what you want to do. They stop when someone spots a big animals. You don't have to go far from the road or even get off the road to see a great deal. The buses drive very slowly. A lot of bump, bump.

I could spend eternity at Polychrome Pass! Check out info on that. Here's a great photo. Polychrome Pass is at the Tolkat River.

http://www.wildnatureimages.com/Polychrome%20View.htm