Yes, depending on the school one is trying to reach, a particular score is needed. But even in such a case, don't settle for a score that guarantees admission; a better score can always garner scholarships.
Obviously, with an LSAT at the 75% percentile and a GPA above the 75% median i'd say your a lock for admission. I don't think anyone can truly say what $ you'd likely get. It would be decent but certainly not half or a full ride in my opinion. Good Luck :)
Hi! I've asked about that too and most law school admission counselors that I have spoken to have said that they prefer academic references. You should definitely consider talking to one about your situation though. Good luck!
Most school websites tell you directly. It says on their admission pages that Feb LSAT sitting usually requires a more competitive application due to rolling admissions.