Life changes

I've got two options.
Work full time, and start Nursing School.
Work part time, and start Electrical Systems training.
I've always wanted to be a nurse. However, I have always wondered if I'd be able to handle it emotionally. When Audrey was born, I wanted to be a nurse to take care of other kids in the NICU. Now, I don't think I could handle that. I'd also thought of getting on a transplant team, that I could do. However, I think I'd be better off working in Orthopaedics or something.
Now, I've got this option of Electrical Systems training. It's not really a degree, or even a "real" course of study, it's part of the Aeronautics training for Airframe and Power plant FCC certifications. This is all brought on by getting a phone call from Guilford Technical Community College, via Honda Jet. Now, Honda Jet is supposedly opening a facility by Piedmont Triad Airport in early 2010. I went through several testing sessions with Job links, and some other company in April, and never heard anything back. They started with Airframe & Power plant training by choosing 25 people to put through the 2 year program. I didn't make it into A&P training, and never heard anything back. (I wasn't too upset though, as I was 1 of 2 women at the final assessment.) I figured that they were all done, and that I hadn't made the final cut.
Then I get a phone call on Tuesday, telling me classes start on the 18Th. What?
Now, I have very little time to make a decision, and plan for whatever choice I make. My son starts Kindergarten a week after I would start the Electrical Systems program. I wasn't planning on starting any of the Nursing pre-requisites until spring semester, just so we could all get acclimated to our new schedules. Now, I would not only have to stress my son out with him starting school, and me not being home as much as I was before, but I would be totally stressed out myself. There's so much I need to figure out, and I don't know what I'm going to do. I don't know that I really want to put private airplanes together, but I'm not sure that I don't want to either. It's a great opportunity, and I wouldn't have to pay for any of it, except tools and books. Now on the other hand, nursing school is going to cost a pretty penny that I don't really have. (Don't even think about telling me to get student loans, I've still got 30k to pay off from when my husband went to school for a pointless software engineering degree, since nobody will hire anyone for that type of job unless you live in Silicon Valley, and who can afford that?)
UGH. Either choice will be hard on my family, but which one will be the best option for the long term?
My heart is telling me Nursing, but it's wavering.