storm jib on the Day Sailer?

Question about the smaller jib sizes. Currently, I have 1 jiffy reef in the main.

I found a 28 square foot storm jib ($205), and I wondered if that would be a good area for the windier situations to match the reefed main?

I want to keep the boat balanced and steady in Apostle Islands, Lake Superior. I know most of the people sail in the fair weather only (10-15 knots), I do too, but when you are several miles out, sometimes you just have no choice, hoping you are best prepared.
On the bigger boat I found that reefing genoa/main make the difference between hanging for dear life and having a lunch in the cockpit table, same wind conditions, a big difference!