You can get 6+% yields in elizabeth and southern suburbs - hackham, huntfield heights and christie downs.
SA is yet to have its mining boom. Excluding Tassie its the cheapest state, its a great place to raise a family and alot of investors are now looking here as you get good value for money.
Southern subs - the duplication of the expressway and upgrade of the railway. You have everything here: shops, beach, TAFE, hospital, schools, rec centres. Unless you work in the city (which most don't) you have absolutely no reason to go into the city. Lonsdale is industrial providing thousands of jobs.
Its no secret house prices shot up when the expressway first opened. With the duplication and rail upgrades it will happen again.