What to do?

Hi, first post so please go easy.
I'm an ASN and I currently work night shift in the ICU at the local hospital. Lately I'm starting to feel unsatisfied at this job. I like the work, but the hours are starting to get to me. There are currently no dayshift jobs available at this hospital, and the next closest one is about 40 miles away. I can't really afford to commute everyday b/c of gas prices and other bills I have. My question is this: should I go back to school and try to become a nurse practitioner. I've been thinking about this even before I went to RN school, and have been thinking about it a lot more lately. Also, does anyone know approximately how long this would take? (I say approximately because I realize that not being able to see my transcripts or knowing the course requirements of the school I'm thinking about, it would be impossible to have an exact timeframe.) MU has an online RN-BSN as well as online MSN/Practitioner program. I've been thinking about trying it, but don't want to spend several a billion years back in school.

Any tips, feeling kind of lost right now.

Thanks in advance Jerry