I'm finally making the foray in LF photography and have started to acquire the big ticket items: 4x5 camera, lens, tripod and head. These have eaten up most of my budget, but there's still a long list of small items that I need. I need a reality check though on some of the prices that I'm seeing. What should a person new to LF pay for the following:

1. Loupe- I've seen these from $8 to $150
2. Light Meter- These start at $150; should I just use my Canon 40D?
3. Dark Cloth- Do I really need to spend $60 for a piece of cloth?
4. Backpack- Here it might make sense at least to spend $150
5. Scanner- Do I need this starting out? Is a good one like $700?
6. Filters- I'd like to spend a fair bit of money here b/c they actually affect your image
7. Cable Release- what kind do you want exactly?

Misc. other stuff:

7. Lens Wrench
8. Lens Wrap
9. 4x5 negative sleeves
10. Ansel Adam books 1 & 2

Out of the list above, where would you prioritize spending money? What can you skimp on or forget entirely?