Hi Russ,
If any help to you, I did a couple of trips as a tag along in my 230 with three other craft through Stawell Aviation to
The Kimberly region.
I have the itinerary with all coordinates distance etc if you would like to have a look.
No idea how I can send to you except snail mail?
The route was similar to your plans, so maybe of some help.
Yes, you need to be well organised with forward and up to date contact with the strip operators for pick up times,
No iPhone connections,
Pm we if you want the info.
Great journey, something you you never forget.
HIC is obviously the guru for this area!
Best wishes,
PHIL.