I'm leaning more towards rooted cuttings. Seeds will take a lot longer, and I would really like Yuzu lemons in a few to several years, not 10 to 12 years.
That's what I was going to recommend, but I only know US growers and I didn't know whether you'd be able to buy seedlings or rooted cuttings in Canada. If you can get them, that's definitely the best way to go so you get a good head start.
I don't know yet if I can grow them here - I only just planted them in August, so we'll see if they make it through the winter. If they do survive, I intend to plant several more, as well as some other cold-hardy citrus like satsumas and ichang lemons.