For your container, consider sewing up a light weight bag yourself, copying the features you like.

Go over your contents very carefully and thoughtfully; you are definitely carrying more than is necessary (Spiroflex and 2nd skin?), but you can make the best decisions, since you know your training and skills.

You might consider slimming down the kit when you are in the more "populous" portions of the trail, as opposed to the wilderness stretches. I doubt you need the book - a crib sheet with a few notes should work quite well and I am not sure that even that is necessary.

Improvisation should be your watchword.