If you are flying in using a charter service the first thing I would do is check what equipment the plane is required to carry
by law in Alaska. When we used one I still carried my normal (as passenger) survival gear along with seasonal clothes, ie. if I was on the ground hiking.
Fire starting equ.
Compass
Folding knife with a saw blade.
A few band-aids.
Water bottle.

Doug's AMK Kit with a folding knife/saw,
AMK bivi bag, a few contractor trash bags,
and water bottle with a metal cup would cover the bases nicely.
I did not worry about the comm gear as there was no
chance of deviating from our planned course and we had a time
line.
You have a handie talkie so the comm is covered.

IMO unless you are planning a drop camp, if it can't fit
in a std. shoulder Man Bag then you are packing to much,
you need it small enough to "keep with you on your body"