To Work or Not to Work... that is the question

Well, I have once again come to a crossroads with the working or not working situation. There has been a position listed at a local hospital that would be a residency for the Birth Center. I have always wanted to try out working in this area of nursing. For as long as I can remember, this is what I have wanted to do. But I've always been hung up on the fact that when you're learning a whole new position, it's a lot harder to get a rhythm when you're only working part-time. This particular position would only be 60% night shift(which works out to be about 24 hours a week, split into 12 or 8 hour shifts... so, 2-3 days per week). It has been almost 2 years (in July) since I worked last on 7SE and that was only one day a week. It has been 3 1/2 years since I worked (mostly) full time. This lapse of time is beginning to make me feel a little rusty in my skills, which makes me think this would be a great opportunity, but also scares the beegeebers out of me since I don't know what I am doing any more! Also, when I did work the full time stuff, I didn't have two little boys to think about and I DO love staying at home with them all the time. I JUST DON'T KNOW!! Such a conundrum. In the meantime, I have started to get my resume and cover letter ready for take off. I'll let you know what I decide.