Neosparassus diana

That's an awesome combination of photos!

Not sure about this one but underneath pattern seems to best match the Diana Badge Huntsman

I thought it was Neosparassus sp. but wasn't able to find a fit with the right badge—the other species I looked at (and also N. calligaster) didn't have the two spots. H. diana does though and on more detailed reading (that I hadn't done properly previously), arachne.org says
'The female is fawn to orange to pinkish brown. There is a distinctive black shield with two white spots on the underside of abdomen, usually with an orange stripe further towards the rear, this orange sometimes bordered by a black line. The body is flattened, the first two pairs of legs distinctly longer than the others.'
The colour (which I'd previously thought incorrectly as limited to orange) fits, the spots and badge description fits, the two dark spots on the abdomen (above) match with many other photos of this species and there definitely are two pairs of legs distinctly shorter than the other two. Also, the row of 4 eyes (which have been photographed really nicely in #1) are all the same size, whereas N. calligaster has two smaller ones on the middle. Here are some references:
http://www.arachne.org.au/01_cms/details.asp?ID=2221
http://www.findaspider.org.au/find/spiders/481.htm
https://www.inaturalist.org/taxa/353524-Neosparassus-diana/browse_photos

While discussing ID, I have a question: this individual seems to have very light bands of black, then white on the legs (like N. calligaster has, just much more distinctly) which I thought might darken if it's an immature?? I'm probably being too thorough though.

All in all, I think it's much more definitive to ID as N. diana instead of what I previously suggested (N. calligaster)

Thanks for all that research Yumi - much appreciated

Thanks all. I found an image with a similar badge at http://www.bowerbird.org.au/observations/9525
(browsing Neosparassus Diana to the very end at ALA).