New Grad Psych Career Path?

Hello all,
I am graduating soon from a ADN program and I have an interview on a Psychiatric floor. What I wanted to know is where do motivated nurses go from there with education and certifications? I plan on staying in school for the foreseeable future and want to keep advancing when I am ready for new challenges. Is there a APN role in psych, or other career paths that some of you have taken and enjoyed?

I have a good GPA, a good repore with patients and I am a large frame male, 260lbs.

Thank you