Karina - Not sure if you're still looking for info on this - but I am studying a nursing degree part time and externally through CQU (Central QLD uni). There are short (2-4 days) workshops that I have to go to CQU for but only for some subjects. For example, the science-type subjects or practical nursing subjects where there is a practical component that just can't be completed off-campus. It makes it expensive - paying for travel and accommodation to the uni for those few days but it is well worth it. In the CQU degree, clinical placements start 2nd semester of your first year but it depends which subjects you enrol in. Because I am part time, by the time I get around to enrolling in the subjects that include a clinical placement, I will probably be in my 3rd year. It is pretty flexible as long as you complete pre-requisites in the appropriate order.
There must be other unis that offer nursing externally - I would just google it and have a browse through the different websites. GL!!