My personal experience,
Anytime I have made a decision, where I allowed money to be the deciding factor,
I SCREWED MYSELF, ROYALLY!
There are so many ways nowdays to supplement your income, you just have to find a niche that works for you.
I have a couple teacher friends that do tutoring, one has a seasonal summer job at a swanky restaurant, and one is a rep for a home party based product. She is actually doing quite well.
Where there is a will, there is a way.
I believe you will make the right decision for you and your family