I'm canoeing down a river with my friends for a weekend. What are the minimum things I need?

A bunch of my friends and I are making some canoes (this one) and are planning to take a trip down a river for the weekend. We'll be camping on sandbars or on the bank of the river, so I'm probably going to take a hammock with a frame. I have a little butane stove with chef boyardi.

What else do I need- mostly on the boating side? I've canoed before, but I'm by far not the perfect boater. What is some other good things to have/do for my trip?

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My pack list:

Canoe

2-sided oar

Backpack

Drybag x2

Chef boyardi x 6

Camelback

Cell Phone (for emergencies)

Flashlight

Hammock (with stand)

Sleeping bag

Life Vest

Change of clothes/sandals

Ziplock bags

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Thanks all! I'm trying to pack as light as possible