Honestly, you WOULD have been better off if you could have gone to NYU or Columbia (and not just because of their rankings, either, but because both are tops in NY and in general for sports/entertainment law and tops period for international law, plus would almost guarantee you that $100,000 a year)...umm...but some of us realize that not everyone can nor wants to go to those schools.
So...in light of that...and to actually have someone answer your question...I don't know anything about St. John's except it's ranked higher than the other schools. But I'm thinking that, to have the best shot at $100,000 after law school, especially to practice entertainment/sports law, you need to go to the best law school you get into and make the best grades you can. I've been told numerous times that employers care about law school rankings and class rank...and I've been told numerous times that this is even more true for entertainment law (and I know because I'm planning to go into that field).
Hofstra is the only one of those schools, that I know of, that has an Entertainment/Sports Law Society, if that makes any difference...
Either way, you've got some competition coming from those from NYU and Columbia who plan to go into those fields.