As a chief pilot for a 135 I can tell you that flight time is not as important as personality. Motivation and ambition are huge when you have to work autonomously in a flight department with little outside support. Having a sense of humor and positive demeanor also make the extended trips easier from a crew perspective.
We still really need 1000 hours for ARG/US, but a 1000 hour pilot with no jet time who meshes with our organization would probably work out great.