Not really. 5 Rodda 7 Hooper 9 Genia 12 Kerevi 13 Kuridrani would all be pretty certain too and I would be very surprised if Koroibete wasn’t 11. Nasirani at 8 is highly probable.
All of those bar Genia are on form.
I’d say the only positions which are really unclear are 6, 10, 14 & 15.
I agree that Rodda, Hooper and Kerevi are also locks for their spots. I don't think Will G is certain at all for the No 9 spot, based on his form this year. Koroibete is almost certain for a wing spot and I would think Naisarani is the most likely No 8.
On form, I think the starting 15 for the first RC game should be :
Slipper, Fainga'a, Ala'alatoa, Arnold, Rodda, LSL (Lukhan Salakaia-Loto) (although Valetini must come into consideration based on current form), Hooper, Naisarani, Powell, Lealiifano, Koroibete, Kerevi, Kuridrani, Naivalu/Pulu/Speight, Banks.
I do not expect to see this side selected by Cheika - it won't complement his new attacking game plan whatever that might be. But rest assured, he will have Foley and Beale as the main players in whatever he's designed.
Apparently, the Brumbies have finished second on the try scoring table for the Super season. Not a bad start if you're looking for an attacking backline.