If you were going hunting would you bring a BB gun? Why not just get a real snowboarding jacket? There are a ton of jackets on Dogfunk.com right now for up to 60% off. There are plenty of jackets to be had for under $100 bucks that are good jackets. It will likely be one of the least expensive things you end up buying as you get into snowboarding. Just save a few pennies and get equipment made for what you are doing, in the long run it will be worth it.
When the fuck did we get ice cream?