Nanny, anyone?

Here's the deal, I will be working 36 hours a week this summer at the hospital. That's a good amount of hours right? Wrong. I want to make a lot of money this summer, and for some reason me and my friend have baby fever. Why can't we just have spring fever? Okay I don't want my OWN baby by any means. I don't want one that will cry in the middle of the night or anything like that, I just really want to be around little kids in the summer. I think it would be fun. So I posted an ad on Craigslist that basically says I am a nursing student who is certified in CPR/First Aid and I work in a hospital where I care for any age and all that good stuff. I got two responses right away! One woman just needs an occasional babysitter when she and her husbands work shifts clash and she has a 14 month old girl. The other woman has 3 children, ages 4, 2, and 10 months old. She says they are pretty independent but I am a little hesitant with 3 children where one is that young. But, I would get paid pretty well (some of my friends are telling me $15-20 an hour for that many kids). And this woman owns her own business and would need to go in every once and awhile and would want me every Thursday and Friday which would work out perfectly with my hospital schedule. Don't worry though, I have told these people about my trips I am planning on taking so it won't interfere. Anyways, this post is more for the womanfolk...so what ages would you want to nanny for? And how many would be your ideal amount of children? I am trying to meet with these people in person so I can see what their kids are like, so hopefully I will find something that will work!