+1 on the dirtygirl gaitors
+1 on AWOL's guide
I agree with shifting to a different stove setup. I'm a big fan of alcohol stoves, but you might also consider a Biolerwerks Backcountry Boiler (about 8oz, 16 oz capacity, stove-pot combo wood stove.)
Personally I get paranoid about down getting wet, especially with the humidity you'll likely face on the AT. Don't get me wrong, lots of people use down. It's something you may want to consider though. There are many synthetic options which may be lighter than the items you've listed (i.e. MLD Spirit Quilt, Patagonia Nanopuff Pullover, etc.) Again though, that's mostly a personal preference thing.
You could easily go lighter on the pack if you decide to go frameless.
I'm not familiar with your e-reader, but it may be more reliable (and lighter) to photocopy guidebook pages and carry those instead. They don't need batteries and can't really break either.
I'm a fan of your water storage system. That looks great.
I feel like you could remove an article of clothing from your pack - maybe the 9.66 oz midlayer. It seems like a lot of weight to keep in your pack along with a puffy and long underwear.
I'm no pro, hopefully this helps a bit.