This should be moved to the Health Professionals forum but I can answer for you. P.A. is a great job if your looking for decent hours, no call for the most part, and the ability to switch the area you work in [ i.e. going from e.r. to derm pa ].
Education is for the most part a bachelors but there are some masters. But remember that the masters is really for people who have bachelors and want career changes. But the degree doesn't play such a big role. It all depends on you.