Property is a very good idea. However, I suggest getting an apartment close to a CBD. Houses, while great investments in the long run, since they grow a lot more than apartments, don't give as much cash-flow (since rent for houses usually aren't as much, nor as likely, and other costs for houses), meaning you'll get less now. I'd suggest somewhere near the city, though in and around Parramatta is also a good idea. Also, Gosford.
Regardless of what you do, I suggest some sort of investment, or saving. Preferrably, investment. Though, congrats on coming into this money, and best of luck in whatever endeavour you choose to partake.