i love the way you're thinking but, as someone who has lived alone in the woods, i can tell you, it's harder than you think
first of all, foraging is rewarding, but it's difficult to learn. there are hundreds of edible plants in any ecosystem, but there are thousands of inedible, even deadly plants, and when you first get out there, they're all going to look the same. plus, edible plants often have very similar poisonous look-alikes. (here in MO, we have deadly Water Hemlock, that looks exactly like tasty Queen Anne's Lace, and deadly False Morels, that look like, and have the same growth habits as tasty delicacy Morel mushrooms) It takes practice to learn to recognize and forage, and book illustrations just don't cut it.
Gardening in the wilderness is rough. If the land is forested, finding an adequate place will be near impossible. Gardening for survival is no piece of cake, either. It takes a sizable piece of land to support even one person, and hours of daily work and cultivation.
You'll need to learn to hunt (and fish!), and since you'll be trying to survive out there, you'll likely be poaching ( I don't know anything about hunting laws in Ontario, though...) Hunting, like foraging, isn't as easy as the books and tv shows will have you believe. Do you hunt? Have you experience in killing, gutting, and chopping up real animals? It takes patience, determination, and an iron will. What weapons will you take? Will they be legal? How will you preserve extra meat?
Building comfortable long-term housing is difficult as well, but do-able. Definitely do your research, and remember, the more materials you haul out there, the more likely you are to get noticed. You'll have to keep in mind all weather conditions, storage, and waste removal.
What are the laws regarding living there? Will you be considered trespassing? Is building on that land prohibited? Poaching? Wildcrafting? Little wilderness laws often have nasty consequences. In MO, if you get caught just owning an eagle feather, you can get serious jail time. I have a friend who was playing around on government land with a bow, not hunting, just shooting trees and things, and he got a $300 poaching fine. Know what you could be getting into.
And as fun as getting away from civilization is, it is lonely. Make sure you have a cell phone with reception or something in case of emergency, and adopt a good dog.
I hope you have the determination to get out there. Living off the land is beautiful. Out there, it's easy to feel at peace with life. You learn about yourself and about where you fit into the universe. It's crazy dangerous, though. The day to day grind of just surviving takes a lot of the romance out of it.
Best wishes