Hi there,
Based on my personal experience, most students in Australia that do not have 'permanent resident' or 'citizen' status will have harder time in obtaining jobs especially jobs from large companies that offer good career prospects. This matter is further aggravated due to a rapidly increasing number of students in Australian university and therefore higher competition in the job market. Furthermore Australian economy currently is somewhat stagnating in my opinion.
I almost went to MBS too and did some research. I noticed that a lot of people commented that majority of Australian companies favor work experiences more than an MBA degree. Of course with MBS I am sure there are internships along the way and other career-related opportunities at the very least, but I personally think that Asian/European tend to value MBA graduates more.
My personal recommendation for you is try to go into NUS or ESSEC instead as those unis have great links and have been feeding a lot of their graduates to MNCs. Australia has been gaining reputation as cash-cows among international students due to its exorbitant school fees (without scholarship i mean) and decreasing quality among admitted students. A lot of my relatives and friends went there and commented that a lot of students especially from mainland China that has sub-par English are admitted to top uni such as University of Melbourne.
I apologize for any remarks that I have made that someone might find offensive, but this is just my personal conclusion after researching Australia and MBS in general. I personally really love Melbourne as a city and will definitely feel that I will enjoy my experience as a student there, but I decided not too as I consider my prospect on landing a decent job there is kinda low.
Hope this helps!