goodluck with it mate but yeah this is a pretty small journey, did adel to syd over newyears in my executive, loved it. watch out for truck drivers, had one run me off the road which totalled the clip on my muffler had to repair it with the help of a local servo in a town which let me use their tools.
It seem's like a huge trip the first time but like minux is saying its not difficult, so dont get psyched out, and have some goddam fun, if you can go through teh blue mountains theres some amazing sights up there, i fell in love with them (comments about the girls hooked up with there another time) plenty of decent nightclubs there, checkout panthers in penrith if your feeling up to it.
NSW cops have nothing on the anal-ness of SA cops, but dont take that as an excuse to do anything stupid, stick to the road rules, you dont need to prove anything, show off or test the car above legal limits.