I have visited Banff/Jasper/Yoho NPs twice before with digital cameras (no film camera) and I will visit those places again early this September with a large format camera.

Questions:
1. Can I see color leaves (fall foliage) in early September? My search told me it might be able too.
2. Which large format camera, 4x5 (Tachihara), 5x7 (Deardorff), 8x10 (Deardorff)? I think 11x14 is out of the question for hiking.
3. Which lenses should I bring, 75mm, 90mm, 150mm and 210mm for 4x5?
4. Black/white or color, or both?
5. What was your experience of shooting large format when you visited those areas?
6. Are there a lot of bears those days in these parks? What lens should I use to get a good photo of bears?
6. I like to hear your stories with your large format gears when you visited those parks.

Thank you in advance!
David