Hi Dad (I'm the oldest of the two sons). Looking forward to the trip this summer! I very much remember my hike up 75% of Katahdin in '77 at the age of 8-3/4. I just couldn't quite reach that next hand hold to continue on with you.
it is a good thing your younger son (2 years younger than me) just bought an Atmos 65, so he should have plenty of room for some of your things. I'll be getting something in the 50 range (and much lighter!). so your extra items need to visit his pack instead of mine
if there are going to be any contests between us siblings, it will be an occasional speed race, or to see who can get camp setup first and eat first; not to see who can carry the most of dads gear.
thanks for all the advice everyone to help make our trip a success.
G