Sounds like Fred works for Maxem or Star...
one post about another operator “they’ve only got a 1900 or dash 8”... next post ”only got a 1900” so which is it buddy? ... next post “do not think they can do it for you”....twice mentioning they don’t have a jet- well, belly tank did ask about turboprops too, hence why I have mentioned Maroomba as another option.
they also have a King Air.
B200, 1900 or Dh8 are all capable aircraft types of 5 people to/from Onslow.
No, I don’t work for Maroomba.
Keep all your options open belly tank- ask each place your own questions now that you’ve got a few names to try.