If I were to visit
Putting your nights in Adelaide is very affordable because there are some many cheap Adelaide Hotels around. Most of the Hotels in Adelaide comes with free inclusions too like welcome drink, flowers and something free meal voucher. That will sure save your spending on food.
When you are there, don't ever miss stepping foot at the Gold Coast. Just take a look at the picture. Aren't the beach beautiful?
Do you know that Air Asia is offering free flight to Gold Coast if you sign up for Citibank Credit card? I already have one, I wonder whether I can apply for another one. Free flight eh. Who don't want right? :)