Looks like you are well organizied! Have lots of fun. BTW the water temperature has dropped quite a bit today when we swam in the river, compared to just 1 week ago! There are tinges of yellows on the trees and we saw a deer early in the morning already - signs of autumn approaching.
Today I saw only 40% chance and only 5 mm or 1 mm. So the weather may not be so bad and I am sure you will have a very good time. Bring warm clothing though but do swim anyway - it is worth it! The cold water rejuvenates you immensely and it is very medicinal.
You are taking your stove on the camping/ canoe trip? Wow! and you are taking the coal as well? That is a lot of weight.. But it made very good shiskaboo that is for sure.