This what I pack for a 6-day trip
2-Pair boots 3-heavy socks 3-light socks 3-shorts
3-long Jon' s top and bottoms
3-pair jeans (Wrangler)
3-Tee' s - 3 long sleeve wool
3-Heneley' s
1-wool sweater
1-light coat
1-heavey coat
1-wool Pants
Hat,Gloves

As for a day pack I would go with a torso or a good soft side pack.
Water should be at camp so you should be able to fill cantee' s.Bring around 40 round of ammo.Were Nylons to cut down on Saddle sores it helps.BBJ