i wonder if you claimed “legacy,” they would look to see if the legacy ever donates to the school. I know an IS having similar GPA to the OP but took the SAT instead. He got 1250. Both his parents are legacy. He applied to econ dept three years ago. rejected. From the mouth of the parents they never donated to the school.
I guess couldn’t hurt - but legacy in its own I believe can help. But from what you hear its if you get into the maybe pile that it can help get you over top vs. someone who isn’t - - not a strong part of the process.