Hi Dreamer - I'm jealous you're doing the whole trail
The ground is really a mixed bag and had everything from easy soil to very rocky and sandy so you'll need a full bag of tricks... If you can, grab some MSR Ground hogs to put in the mix, also take some guylines to connect to your poles so you can tie them off on trees / rocks as an alternative. The campsites that aren't at elevation are quite well sheltered. You might need to be more mindful if camping on the mountains - like Brinkley Bluff where there's more chance of strong winds.
Using pegs 'deadman' style or just parallel to the ground with rocks to anchor them worked pretty well. In the photo below is a typical campground where some of the stakes work well and some need rocks to support them. You'll also notice the hikers I met had a TT Stratospire. What are the chances ?

- Tarptents on the Larapinta
The owners of the Stratospire had a combination of Easton Stakes and titanium stakes, some of the titanium stakes were trashed from the hard ground. Mind you, one of my MSR groundhogs didn't take too kindly to the ground either:
So definitely be mindful of the hard ground

Had no problems with Dingos myself. A hiker I spoke to had his food bag swiped when he wasn't looking by an enterprising Dingo. I was also advised to keep any footwear with leather inside your tent as the Dingos are apparently fans of leather boots. Go figure.
The cold weather this time of year causes fish to die as they accumulate some sort of microbe around their gills and the Dingos are having a field day with the belly up fish. So don't be surprised to meet some fishing Dingos...
Feel free to post or PM any other questions - I'm sure you'll have a ball !