Welcome to the forums!

Your list looks pretty good to me, shoot 22lbs ain't bad.

I'm about the same winter weight as you and there's not much left to give up. It'd take some spending to get much lighter, so I'm pretty happy.

One thing you can add as a option is an alcohol stove, like the "Penny Stove" or "Super Cat". For your three day trips they might be a very good option for you.

You're hitting that point now where you're going to have to start heading towards "Ultra Light" to shed weight. That pretty much involves minimization.

Leave your gun, fishing gear, GPS, and camera behind and you're probably getting close to losing those 2lbs. Switch to a small tarp and leave your pad behind too and you might be under 20lbs.

It may not be worth it to you though. It depends on what you're comfortable with.