Most of what you've picked out looks pretty good.

I don't think you need two battery chargers.

That's a really big Ka-bar knife, I doubt you'll need two knives.

Probably don't need a zippo lighter. A small Bic would likely do fine.

The folding shovel wouldn't make it into my pack.

Neither would the light sticks.

Check out the Gear List and other info linked on the left side of the page here. That will give you some good ideas. Read the article on "Lightening the Load" too.

Since this is your first multi-day trip, I suggest you take whatever you want. What ever makes you comfortable. When you get back go over your gear again and take a second look at what you didn't use, and of those items look for what you didn't need. Then consider leaving what you didn't use and don't need at home next time.

For example, I have a Two-Way Radio and I carried it a few times after I got it, but I don't carry it anymore. Except for the NOAA weather channels, I never used it. I carry my cell phone instead now. It has good weather apps, and I have a better chance of contacting someone if I need to, and vice/versa.