Toronto might be a little better than Vancouver, but the difference isn't that extreme - we're not talking Silicon Valley vs. Des Moines here. You're concerned

Toronto might be a little better than Vancouver, but the difference isn't that extreme - we're not talking Silicon Valley vs. Des Moines here. You're concerned about the weather - Vancouver's the clear winner here. You can finish your degree in twenty months - again, Vancouver's the clear winner. Finally, that twenty-month UBC program's got extra resources to get people who aren't programmers and are switching careers up to speed - it's designed for your situation, while Toronto's ordinary CS program is just going to throw you in with everyone else.