This sort of trip is so easy I don't have to worry about too much gear for us. The weather is also so predictable in summer here that raingear, etc. is unneeded.
Here's our general gear list:
My daughter carried:
-Homemade pack (~6oz.)
-My WM Summerlite
-a BPL inflatable pillow
-spare shoes (slippers)
-her sleep/dry clothes...there are plenty of river crossings (spare underwear, a LS top, flannel pants, socks, beanie)
-Gatorade (she insisted)
*I'd put her pack weight at ~5 lbs.
-Homemade pack (~6 oz.)
-adult sized homemade quilt (~20 oz)
-GG Nitelite pad
-spare shoes (crocs)
-sleep/dry clothes (same as daughter)
-his Mora knife
I'd say he was also at ~5-6 lbs.
They both carry their gear comfortably.
Outside of my personal gear, the shared stuff is:
-Golite Shangri La 3 with inner nest (I never carry the nest on my own but the kids like it)
-Snowpeak Gigapower Ti (When feeding hungry kids, speed is of the essence)
-2 cookpots: Snowpeak 1400 Ti with frypan lid (which one kid uses as a bowl/cup), Evernew 900 Ti pot w/ foil lid, 1 Ti cup, 3 BPL Ti sporks. They all nest nicely when the handles are taken off the Evernew.
-I carried my daughter's sleeping pad (Ridgerest 3/4)
-I carry their jackets (generic nylon shell with fleece lining)
-I also carry a MSR Miniworks when with the kids on short trips...easier to have them pump than have them wait for Aqua Mira.
I think that's all that's noteworthy...