This is Emmanuel, Im a nursing student at Ballarat as well. unfortunately, Im doing nursing at ACU (another university at Ballarat). I dont really know how to transfer GPA from US to Australia, but i think your score is enough for bacheler degree.
We face nursing shortage, so it will be easy to find a job here, especially the aged care job. and we have 2 hospitals here --- Balllarat Health Service (or base hospital) and St Johns of God Hospital. They both offer graduate programme with a wide range of areas for you to work in as a new graduate for example, medical, surgical, emergency, mental, rehab, ICU, peds etc.
The only thing I concerned is they gonna treat you as a domestic student or International. IT IS RELEVANT TO YOUR FEES!
And you definitely have to work with younger people like 18 yrs old young. But Im sure you will find someone around your age.
This link here for you: Program Finder Search