Old thread is close enough to 404'ing

What is a good/expectant packweight range for a five day, four night trek on the Appalachian Trail? My pack is weighing in at about 30 lbs. with a full 3L blader and four cups of oatmeal (in addition to some snack bars), but it should gain another 6-10 lbs from another bottle, a book and more pre-measured food rations.