At first I went
Cook, Carberry, Bell, Root, Morgan, Buttler, Stokes, Jordan, Tredwell, Finn, Rankin
Having Stokes bat 6 at test cricket and 8 (as he did in the odi's in England) is stupid. Bopara's medium pace cutters and swingers work quite well in England and Asia but I doubt he'll get away with them on the harder Aussie wickets. After some thought I came up with the following as a more radical proposal.
Cook, Carberry/Root/Bell(For 2 and 3), Stokes, Morgan, Ballance/Bopara, Buttler, Jordan, Tredwell, Finn, Rankin
Stokes isn't really a finisher of an innings. Isn't brilliant at rotating the strike, has poor non conventional shots and although he has power it's a bit hit and miss especially if he has to go straight away. I'd like to see him at 4 where he can play properly. He's a naturally quick scorer and attacks spinners. It possibly wouldn't work but with Morgan, Ballance/Bopara and Buttler below there is depth to recover. It also gives him more exposure to further his development
Morgan and Buttler are experts in the last 20 (or at least Morgan was, doubts are starting to grow about his form) and ideally you don't want them in before then. Bopara has also done decently in that role.
In squad but not selected - Briggs, Bresnan( bound to play but **** if i'm putting him in my team)