Confused about best way to start process --HELP!

Hi everyone! I've decided to quit my current job and start a new career in nursing. I already have a BS so I want to apply for an accelerated BS to BSN program. I have a couple of questions :

1) How many pre-req classes should I take at one time if I am planning to work full time while taking them? I'd like to get them done as soon as possible but also want to make sure I get excellent grades so I can have a competitive application

2) Can you get financial aid for pre-reqs if you arent going to school full-time?

3) How do you support yourself when entering the program full-time? Do you have to have financial aid, as well as take out a bank loan for food/rent/etc???

Any help on how to get started would be greatly appreciated. I'm thinking about working full time and taking pre-reqs at night. Is that a bad idea?