I think the Oz test squad looks ok:
Australia Test Squad | The Ashes - England v Australia 2009 | Cricinfo.com
Ricky Ponting
Michael Clarke
Stuart Clark
Brad Haddin
Nathan Hauritz
Ben Hilfenhaus
Phillip Hughes
Michael Hussey
Mitchell Johnson
Simon Katich
Brett Lee
Andrew McDonald
Graham Manou
Marcus North
Peter Siddle
Shane Watson
I'd think the likely Test lineup would be:
Hughes
Katich
Ponting
Clarke
Hussey
Watson
Haddin
Johnson
Hauritz
Clark
Hilfenhaus
I'm most worried about Hussey and his recent form with the bat, than any of the bowlers, though spin bowling is obviously a weakness.
Hopefully Lee won't get a start - his test figures in England are atrocious for a spearhead (averages about 45 per wicket).