I'm honestly starting to lean towards not retaking. It'd be great to get into Penn or Duke, but I might do ED at Northwestern and get that 150k scholarship.
I'm working on a lesson about interviews for Admissions Starter. Yes, interviews can be significant, but many schools don't use them. Prominent schools that invite some candidates to interview include Harvard and Chicago.
... is at actually doesn't interview summer associates outside of OCI ... even have an opportunity to interview. Similarly, if you can't ... would read up on the interview process that firms use and ...
If I am not mistaken, I think Nicole Hopkins took the February LSAT got a 170 and got into Northwestern with scholarship :). But I am not 100% about this.
OP, your numbers are very very strong and you will almost certainly get an interview with both schools. Blow them away with your interview and you will have nothing to worry about!
Add your GPA if it's good (above the median for your target schools).
Add a Personal section with some interests if you have room. If nothing else, it gives AOs something to ask you about in an interview.
A fellow NY'er? Welcome! Others will certainly know better than me but it is my understanding that a 3.5/170 makes you very competitive for Northwestern! Feel free to reach out on the board with any questions.