I want to suggest Western Australia but 9 days isn't enough.. Then again if you spent all the time @ the Ningaloo Reef it would be ok It's nice and hot here

What about Sabah in Malaysia? SHopping in Singapore?

The places above are easy to travel to from Perth

How an intrepid self managed trip? www.intrepidtravel.com.au

Whatever you choose to do, i hope you guys have tons of fun