Addendum to improve GOALS in application?

Subject more or less says it all.

I submitted my application prior to reading much of the advice given w/in this forum, particularly the advice about being very crystal clear about S-T & L-T Career Goals.

Despite that weakness, I still am of the opinion that I will receive an interview, so factor that into the calculation.

Question: Should I submit an addendum that clearly outlines my goals, or should I hope that I have the opportunity to highlight these during my interview, should I receive one?

One factor worth considering: I have already been in somewhat regular communication with the admissions office, and I want to be sensitive to pestering them.

Thanks for input.