Sane

I just started nursing in August and I've been looking around at different areas that interest me. So far, this is the area I really want to go into. I was a psych major until I switched to nursing and I was going to go into counseling for for battered women, self esteem issues, etc; Im very passionate about these sort of things. I had also looked into going into the police academy and dealing w/ sex crimes and such; again, advocating for the women.
I have two questions: 1) I've heard that forensics nursing is extremely hard to get into, bc the demand is little to none, how true is this?
2) Would finishing out my psych degree (or maybe social work, the two plans are almost identical) help me at all?

The one site I looked at said you needed five years experience to become a SANE, so I figured I might as well be gathering classes/knowledge under my belt during those years!