I've lived there for about 7 years, firstly as a student and subsequently as an employee. Throughout my time there there were several cases of racial abuses but it is rather uncommon and is usually restricted to the bums and lower income locals. The public in general over there are friendlier and more courteous than most Malaysians. Food wise there is a wide array of cuisines available around Melbourne (I'm guessing that's where you're gonna end up based on the suburbs you mentioned), but I did crave for the real Malaysian food from time to time. There are plenty of Malaysians and Asians there as well so assimilating to the lifestyle is not too hard.

Correct me if I'm wrong but Melbourne was recently voted as the World's Most Liveable City again. It is a wonderful place to live and work in as the Aussies emphasize alot on work-life balance, but ultimately i returned to Malaysia as many of my friends failed to secure their PR and it got kind of lonely over there. Hope this helps.