Chances for employees' families

I applied ED to Duke and have my interview later this week. Any suggestions from someone who’s already had theirs?

Also, my weighted GPA is slightly lower than what’s generally accepted into Duke, and this especially hurts me because of my race. However, I had took some of the hardest AP’s offered by my school and had high standardized test scores as well as really good EC’s (including Eagle Scout, which I’m the most proud of). How much of a difference does it make if my dad works at Duke?

Sorry, meant unweighted GPA.