Help! Where should I work???

I currently work on a Surgical PCU, but I am looking for a new job. I started out on night shift, then went to 3P - 11P five days a week, and have to go back to nights this week. I am VERY interested in the OR, but the hospital where I work is only hiring people with previous OR experience right now. HR has suggested that I try OR prep or PACU to "get my foot in th door" with OR services. I look at the job postings a few times a week, and there are also a few other jobs that have caught my eye. My first year of nursing school, my goal was to be a flight nurse, which means I need to work either in the ER or an ICU. I was also interested in being a Pediatric transport nurse, on an ambulance bringing babies and children from outside hospitals to our hospital. There has also been a job in the Nursery that has been re-posted. And for the first time since I have been searching jobs, I found one in a doctor's office. I know there is a lot of variation here, but I just don't know what to do. Each one has its pros and cons. Has anyone worked in any of these areas?