You have more than enough, mate. I am heading off with £2000 cash and £2000 separate to buy a car. I'm going mid-July and I'll be in Brisbane to start off too. I'd be pretty keen to meet up with some new people. PM me if you're interested buddy. For the record, I think we are advised to take about $5000 to start off with. At the current exchange rate you're looking at taking almost 3x that.