Small vs large hospital - transitions?

Hi,
I am attempting to reenter the workforce. I used to work at a smaller hospital in the ICU/CCU (no open heart, no angio). I am taking the nursing refresher course and am wondering what direction I want to take my career now that we have our family. I am wondering do I jump in with both feet and go to a larger hospital or go back to the smaller community hospital I worked at. I am trying to reinvent my career and find my niche but feel like I don't know what direction to take. What is the best way (without wasting a lot of time) to get there? I feel like there are so many options I don't know where to begin. I am trying to find nurses in various areas that will let me shadow them for a few days to help (although not tremendously successful at that yet) I am not sure if I will stayin the hospital setting or not. I have also toyed with going back for my Masters but don't know what area to specialize. My other concern is that I have 2 preschoolers and a sophomore in High School- I want to be realistic about my workload/stress level etc. Thanks -any advice would be great!
Carol