Had a scroll through all the aircraft on the register and I doubt that you will get a King Air job with low Total Time.
Pearl want 500 multi + turbine and at least 1500TT
RFDS (will vary section to section) want 500 ME 200 Night Remote Area Night experience, 2500Total etc etc
People in Perth want 500 ME command with 1500 to 2000 hours.
Corporate jobs tend to be filled by people with high total time and type experience. Queensland government looks for co pilots occassionally which might be an opening for you. However they are co pilot jobs only as captains are advertised seperately.