Laser is not good for any hair that’s not BOTH DENSE AND COARSE. It doesn’t sound like any of the hair you have left fits this category.
You should NEVER treat individual hairs on a woman’s face. That’s how induced growth gets stimulated, i.e. because the laser beam will inevitably touch the skin around that one hair and stimulate growth there.
No, you don’t do laser and electrolysis together. You do one or the other. In your case, you should really just be doing electrolysis now. You already killed everything laser can affect. The rest will just keep coming back because it can’t be affected permanently.
Run a search for Toronto here. There are threads about electrologists there.
You shouldn’t tan at all during laser treatments because your skin needs to be as light as possible. If the skin has a tan, they have to decrease the settings, thus making your treatments even less effective. For electrolysis, it doesn’t matter.