There were several students in my nursing class (RN) that successfully worked full-time and cared for children while attending school. However, they had to arrange their work schedule around all classes, clinicals, and other responsibilities. (Of course, having to work is not a valid excuse for being absent from class/clinical.) I can't imagine how they did it -- for me, just attending class and studying took up almost all my time -- but it worked for them. Every person is different.
I would suggest having a plan in place should you find working and nursing school
too much to handle at once. Like the previous person suggested, how about finding out about a loan? Many nursing jobs
offer loan repayment programs in exchange for employment after graduation. Also, some hospitals offer scholarships
to attend nursing school if you agree to work there when you graduate.