Reddit reviews Sea Kayaker's Deep Trouble: True Stories and Their Lessons from Sea Kayaker Magazine: True Stories and Their Lessons from "Sea Kayaker" Magazine

Deep Trouble and More Deep Trouble are good reads and will give you an idea of what can go wrong and how to prepare for the worst.

Looks like a nice place to visit.

I love camping with my Kayak: http://modustollens.org/photos/galleries/Canada/Opeongo_Lake_Sept_2016/Opeongo_Lake_Sept_2016_008.jpg

Near my home: http://modustollens.org/hosted_images/Tipi_Kayak/Kayak_Dunks_to_Dyers_Sept_2016_019.jpg

https://www.reddit.com/r/Kayaking/comments/51xfgu/georgian_bay_ontario_shorline/

A good place for you to visit one day! That's all fresh water too, so, lots of drinking water to be found here.

You could, for a few dollars, pick up a small Sawyer water filter (e.g., https://www.amazon.ca/Sawyer-Products-Water-Filtration-System/dp/B013I0HNJ4); then you could get more water and maybe carry less. I have one of these tiny Sawyers for short trips plus a few other high capacity pump filters. Is there freshwater where you will be going?

Are you new to kayaking or only kayak camping? Can you roll or get back in after a capsize? The general rule is to be 'dressed for immersion' - that is, you should be wearing clothing suitable for being in the water, not sitting comfortably in the kayak.

Signalling equipment - flares, a marine radio, would be a good thing to add if you are going solo. I did not see a map in your gear list. What about tides, rip currents etc. - be good to know the local conditions around that island. What about something to bail out your kayak should it start to get flooded?

I just finished reading this: https://www.amazon.ca/gp/product/B001NAC4W8/ref=kinw_myk_ro_title

Lots of things can easily go wrong.

Be sure to post some pictures of your trip and camps when you return; I could use a vicarious adventure!