Working my way through nursing school?

Should I get accepted into nursing school this fall, I'm a little worried about how well I can balance working and school. I have student loans to pay for the classes (for the most part), but I have to be able to afford rent, gas, bills, etc. I have worked at my current job for 6 years and work about 35 hours a week as a supervisor making about $9 an hour. It is very slow paced and I have alot of time for studying. My worry is that the schedules will conflict and I'll be forced to find something else.

So I'm looking for advice. I've read on here that some people become CNA's or Phlebotomists. How easy is it to get a flexible schedule in those fields? I've looked at some local listings and see several CNA openings and a couple of phlebotomists, but all are full time weekday schedules. Is it worth spending $500+ on a CNA course this summer or should I wait until I make it through the first semester and become a tech (as I've heard some students do)?

I will hopefully try to work it out at my current job, but I'm basically trying to develop a backup plan because I can't afford to be unemployed for any period of time.

What do you guys think? Any tips on working through nursing school?