To The Banker: the only guy in your 12 I'd really disagree with is Cadee. He might be a bright young talent, but he is only 18 and at the AIS still. Unless you think he could outplay Dellavedova for that last spot, at this stage I'd leave him to develop a bit more. Would probably take CJ as a safe pair of hands to complement Mills/ Dellavedova at the moment.
Bogut, Andersen, Maric and Nielsen have all earned spots with their play in the NBA and Europe, but Jawai I am not sure about. I am in two minds about him. He started late, so he has a steeper learning curve than most big men and he is very slow and can't jump, making him a liability defensively. But he also has unusual size and that could be a very useful offensive weapon at the Worlds against some teams.
I also still have hopes that Ogilvy will sort himself out. I think he is more likely to be a better two way player than Jawai in the long term, but he has stagnated at Vandy and needs to answer questions about toughness and rebounding as he approaches his first season as a pro later this year (either NBA or Europe).
So I think I'd probably be expecting Jawai and Ogilvy to compete for that last big man spot, along with a smokey like Ballinger, whose shooting could provide a nice game breaker in some scenarios and could go to the Worlds if neither of the two young bigs impresses enough.
Other than that, I'd probably rearrange a couple of your positions:
1)I'd use Ingles to backup Newley and Wortho and Barlow can share time at SF, with the possibility that Ingles would see time there for certain matchups.
2) I'd split time between Nielsen and Andersen at the PF spot and Bogut and Maric at C, with Jawai/ Ogilvy/ Ballinger the fifth big who would generally only play in certain scenarios. Would consider starting Andersen too, in order to spread the floor to open the middle for Bogut or Newley.
Regarding Anon's comment, Goulding is definitely one to start seriously considering. Not only has the kid got a lot of ability, he has that go get em attitude which I wish a few more Boomers had! (Dare I say it, a modern Shane Heal? Yikes!)