Looks pretty good and well thought out Not sure what you could do other than get quilts made from lighter material, which you mentioned. I guess the Aarn pack is a little heavy, don't know much about those kind, but you chose it for it's uniqueness. You already have plans for the lighter cookpot, and I assumed you wanted to have a nice light instead of some little LEDs. Are you using the JRB stuffsack for weatherproofing...trying to find something extra here.
I haven't been reading gearlists, but thought yours would be worth checking out since you're a hanger. How are those dyneema whoopies working for you?