Ditch the sharpening stone, you won't do so much cutting that you need to sharpen it. I agree with the other poster, if you absolutely have to have one, get a small keychain dmt diamond sharpener.
KEEP the fishing gear!!!!! That's not even a question.
Get a pair of nylon convertible pants. I found some on sale at an outdoors store for $20.
I don't know what you use for a sleeping pad, but if it is adding weight you might want to switch to a z-light, if you don't have any medical or sleeping need for a big pad.
6lb backpack?! Yikes!

The pack I use I consider to be on the heavy side, but it makes a heavy load feel much lighter than the ultralight packs. I tried on all the light weight packs with the same 35lbs in them in the store. REI Flash, Gregory Z65, Osprey Atmos 65, etc. All around 3lb.
Then I tried on the Deuter! Wow, what a difference.

:thumbup: I thought the other ones were comfortable, but this pack made the 35lb. feel 10lb. lighter! It is a 4lb pack, but in my mind, I would rather feel like I'm carrying less, than actually carrying less, if that makes sense. And it was the cheapest one!
http://www.rei.com/product/765140
Cheapest, most comfortable, lightest feeling, what's not to like. I'd recommend looking into it, and at least trying it on with weights, in fact do that with any pack you are looking to buy.
You may not like it as much as I do, but it will save you 2lb. plus make your load feel lighter on your back.
I also went on just an overnighter with a borrowed 1lb backpack, and my shoulders were sore by lunch on the first day! Don't sacrifice weight for comfort, IMO.
I don't know what my base weight is, but on my last trip, the whole pack was 35lb. ready to go, that includes water, and fishing gear. I'm wanting to cut it a little more, but I thought that was reasonable, and comfortable.
P.S. What are you using for a tent? If your willing to spend the money, the tarptent rainbow is only 2lb. and I think they have one that is even lighter.