Undergrad may count for a small plus factor at the smaller law schools (Yale, Stanford & Chicago), but HLS is (almost) purely a numbers game. Its class is so large that HLS has to offer most 17x to hold its median. There are just not that many 174’s to go around, particularly since that kinda number will earn big merit money at other T14’s.
But Oberlin is certainly not Podunk U, and is well respected academically so the OP will be fine.