Mark,
I would consider the following:
Possible deletions:
Light -- delete your least desirable light. Substitute as a backup something like a Photon, Solitaire, or whatever.
Toothpaste -- brushing with plain water should sufficiently clean your teeth for 2 days unless you have special dental needs.
Possible additions:
Disposable butane lighter
More paracord
Duct tape
Sleeping pad
Map
Camera ?
Waterproof match safe
Poncho
Additional knife
I'm not sure what your water carrying/purifying capacity. Keep in mind you need to have an absolute minimum of 4 liter water capacity per day.
I didn't see any non-emergency food listed.
As I look at my suggestions, I suspect that they may actually have added significant weight.
Good luck,
John