I'm no hiking expert, although I was a boy scout until I got kicked out for eating a brownie.....(tongue n cheek joke there)

, but I have hicked that trail.
We too went for 7 days. I will give you one piece of advice from my experience there: You will pack too much.
I would concentrate on things that are absolute "must haves", (like excellent first aid supplies, water purification tabs, protective gear, gps, and certainly a weapon), and leave behind fancy stuff (like 5 different sets of pots and pans, stoves, and cushy sleeping pads with pillows). Yes, it's nice to have some things at some times, but it is much better to have others all the time.
BTW, I'm not knocking your choices, just giving you my advice based on my hike. We cooked over open fires, buried our trash, and got a ton of use out of the many creeks and streams. The terrain is very uneven. It goes up and down and side to side. Sometimes it's wide, sometimes it narrows. You will see a ton of wild life, if you're not trudging thru the woods like a herd of buffalo. Don't be in a hurry because you're only clock should be your feet. When you're hungry, pull you up a stump and eat. When you are tired, setup camp and sleep. There is some really cool bridges and very cold streams up there. You should enjoy it as I did.
I plan on taking my son there when he's old enough.
