E.
Personally I wouldn't quit my job. If there is a way to shorten your hours during the day that might help with taking classes. I am a single mother to two (ages 3 and 1) and I work full time and I go to school. It is hard. But it's all in scheduling. I rearranged my hours during the day when I'm in school and I make them up later in the week. I also scheduled my second class in the evenings two nights a week. So don't think it can't be done while working full-time..it can. It will just take some adjustments and will power. Keep in mind this is only temporary (school). But you will always need income/insurance...even if you have the support of your husband. And the way our economy is...it just isn't good. So weigh your pro's and con's and see what the best decision is for you and your family.
Best of luck!