Very Bad Work Behavior

Upon past disgusting comments from my boss AND having several disturbing dreams about my boss harassing me (one just the other night) I am so not wanting him around me or talking to me. I just can't handle him in my personal space. It makes me angry. I also think back to certain porn comments he made when I first started and it angers me that I never did anything about it and now it seems it is too late to complain to higher authorities. So I sit and stew and boil over when he gets near me or talks to me.
What to do? Should I just approach him and say "I don't appreciate the inappropriate things that you have said to me in the past and due to said comments, I NEVER EVER wish to eat lunch with you EVER, so please stop asking me EVERY FREAKING DAY. This is seriously affecting my well being. If you say anything inappropriate to me ever again, I will report you. It is NOT okay to behave this way in a working environment."
Should I do it? Can I hang on until March when I might get accepted to the nursing program??? Or should I just take the opportunity to start looking for a different job? I cannot work for this pig any longer. Why didn't I just say something in the beginning? WHY??? Now I just sit and wait for him to say something so I can report him but I think he knows that if he does, he is going down. So he just chips away at me by asking me to lunch every damn day.