Skip the second job, quit the first and home school. Believe me, you can do it very successfully on a very small shoestring. Look into it. Your state probably has a great homeschool resource place that can get you started. You can also contact Home School Legal Defense Association to get a state contact.
Good Luck.
Please consider homeschooling: life is short, and if you know what I know, you wouldn't want to miss the opportunity to have such joy as teaching your kids brings.
Working two jobs will make you a stranger to your kids, and leave your other with a task that is best accomplished by two---and best accomplished by the dad when the kids are teenagers.
I know homeschooling is a scarey thought. Just give it a year, then go on if it works. It's better than money, and you can take it with you.