Just apply for everything and goodluck. I didnt apply for early entry, I just put applied finance as my preference. I ended up getting an offer around late November or early December, so way before first round of offers usually come out.
My mate got like an 80.xx atar and he got accepted into...
If you are good at maths/like maths I'd do finance. If you are good at coding/information systems etc I'd do business analytics. I'm biased towards applied finance cause i like it, both have their own challenges.
Tbh when I did business studies I just either made stuff up or used stuff about Google that i read on reddit. My teacher said that the markers probably groan when they read yet another mention about Qantas (cause tens of thousands of people use it). It could be useful to find another company...