I know for a regular applicant you dont even need a personal statement.
I just filled out my main application today...no PS...i dont think you need reference letters either. Not 100% sure of that though...
I talked to Kim Wilson the other day...she said that with my GPA (if it held) and if my LSAT score is 167+ I wouldn't have a single thing to worry about. I think she pulled the 167 number out of her ass though, I wouldn't be sweating even with a 164. I'd be more destructive to myself if i scored that though.