Thanks for the feedback everyone!
I guess my Q is should I even let them know? Will it help or hurt? I figured having a job lined up for summer, esp one which will probably be available to me after grad (family connections), can only make my application stronger, but will the fact that it doesn't relate to anything i wrote my personal statement on make me look bad
It can only help, IMO. Law schools want to accept students that are employable. Showing that your 1L summer is set in stone is the first way to demonstrate you are hirable.