Questions about my upcoming 60-70 days roadtrip the USA west?

I am embarking on my first roadtrip in the west. I will be heading out to Yosemite this weekend with campsite booked. I am 24 year old guy who likes hiking. I am based in San Francisco. I am driving in a household car corolla.

1. Yosemite -5 days
2. Sequoia + kings canon - 2 days
3. Zion- 2 days
4. Great Basin- 2 days
5. Bryce Canyon- 2 days
6. Capitol reef -2 days
7. Canyon-lands- 2 days
8. Arches- 2 days
9. Moab, UT-2 days
10. SW Colorado(monument, BC, Ouray+silverton, Telluride, MV)- 8 days
11. Wind river mountain range- 5 days
12. Grand Teton- 2 days
13. Yellowstone - 4 days
14. Glacier- 4 days
15. North cascades - 2 days
16. Olympic - 4 days
17. Mount Rainer - 2 days
18. Redwood national and state park - 2

Total- 52 days + 4 days worth of travel.
- 4500 miles
- $6k budget

Questions:

1. If necessary, I can still add more 10-15 extra days. Any major gaps or must add regions I am missing? Cities(Boise, Portland, Vegas, Denver) worth visiting? I cross Death Valley on way to Zion but is it late now for DV camping? And Is sawtooth worth extra milage?
2. I am honestly so scared about backpacking 5 days in wind river range due to bears. I don’t want to put myself in high risk since I am solo beginner. At the same time, i want to explore this amazing place. Should i skip it totally? I don’t think i can sleep at night out there camping.
3. I am going with $6k budget. So I am going to cheap out lodging. Sleeping in car, camp and motels. The only camp reservation I have right now is Yosemite. Any advice on managing lodging, food, and budget allocation?

I’m very flexible. open to cutting or extending stops if it improves the overall experience.
Thank you 🙏