Becoming a lawyer, law enforcement and accountancy are best best paths to FBI. No drugs. Not even legal pot. Tell them early. It’s a big deal when they conduct the “in person” interviews with neighbors and friends.
Best friend went to The University of Massachusetts at Amherst and then law school. And nothing like a top 50. FBI and big position now.
Physically fit. Clean back ground. Tested well. Law school grad. = FBI.
UF would be a remarkably good start if admitted.
Not sure on the other departments.