I didn't have an issue with the bus system, but you should allow for transport time.
I love Animal Kingdom. The theming is so detailed. It's definitely a park to take your time in, if you are so inclined. I like talking to the CMs who are positioned around near the animals. I could spend hours in the aviaries watching the beautiful birds.
Here's the page that lists morning and evening EMHs.
I'll be down later in October for the ToT 13K. Have fun!