N.D.
Dear C.,
First, it's great that you are determined to have a career. I, too, went back to nursing school after having my first child. It is not easy, but certainly do-able. I would strongly recommend getting an RN from the community college nearest you that offers it. You will be much more versatile and find more job offers that pay well by doing the RN vs. the LVN, even though it may be a bit tougher program.
First thing is to go talk with the community college nursing dept. and see what their prerequisites are to entering the nursing program. They are much cheaper and better quality courses than the career college route, which (you guessed it) is expensive! The department or counselors can tell you which classes you can usually take one at a time while you are still working. Once you start the program, though, it is full time for two years--but there has been a fair amount of money made available for scholarships and grants to people just like you who want to go into nursing, so you may be able to just work part-time (I worked as a nurse's aide during weekends when I was in school, and took on more hours during the summer).
The best thing about nursing is its flexibility. For four years when my children were young, I worked 24 hours a week on the evening shift and only paid for 10 hours of childcare each week. My husband has always said that he got the best "daddy experience" of anyone he knows, because he was as much their caretaking parent as I was, doing the dinner, bath, homework check and reading before bed each night I worked. My kids, both grown now, remember that and love that he was as much their comfort parent as I was when they were little. Some people find it easier to go to night shift when their kids are in school, others to day shift and a more conventional lifestyle, but it's a job that you can work at less than full-time and still make good money, which makes it worth not being at home. If you decide you don't like what you are doing, there are so many other options of places or types of work as a nurse that you cannot get bored unless you are afraid to change.
Another really great thing about doing it with a child is you are teaching him that education requires some sacrifice, but is worth doing in the end.
Good luck! There are far too few nurses training now to take care of all of us as we age--and it's a job where you make a difference in someone's life almost every day you go in to work.
Cheers,
N.