Another consideration is if you would want to work the night shift. I have worked a good deal in psych; but, if you enjoyed what you did before, I would probably recommend returning to that. And, it is not true that all are sleeping...at night, a crisis will be handled by you---and, depending on the hospital, you may get admissions etc... Besides, if it is the kind of place where everyone sleeps---that can be stressful with its down time and boredom. As a nurse, I much prefer to be busy...
Having tried the night shift, I would never do it again.