This is my last comment - you are not comparing BU vs Harvard/Princeton. You are comparing BU vs. USC which would be an even comparison without $$$ in the picture. There is no scenario in which the USC degree is worth 300k more especially when it will be funded by loans in a high interest rate environment.
I went to Ross and I went back to recruit analysts for a few years but I’m now out of that game with fully grown kids in college. Which is why I’m on this site. Back when I was recruiting, I checked notes frequently with other principals and USC wasn’t considered as a better school relative to BU. Also when we recruited at USC, the focus was more on hiring Marshall kids. Not ME kids.
At the end of the day, I think the consensus here is that you are making an irrational decision at your parent’s expense.