It most definitely depends on the area you are living in.
I was living PA after graduation. I worked on a pedi med surg floor. We mainly had adults, because any really sick child, was shipped out to Hershey hospital. (great pedi hospital)
I then moved to Texas. I worked Pedi Private Duty, Pedi Orthopedic, and presently I'm working a PICU Step Down Unit (Pedi) of course
I have never worked anything else but Pedi. (with the exception of having to take care of adults in the first job).
So, depending on your area, it can be easy or hard. However, its definitely possible. Pedi is so rewarding, so go for it
-Meghan