Fact: it is difficult to have a dream for a whole year, and then let it go because you realised there's something better.
It means you've struggled, pushed and cried over something for a whole year, and then deciding that you don't want that thing. It's almost as if all that effort was wasted. Particularly if it looks like you might actually get that thing, and then push it away. It's kind of like spending a whole day making a chocolate cake, and then when you put it on the cooling rack, you decide that you should've made a vanilla cake - the whole time, smelling the cake as it cool.
If you're currently biased to Monash, maybe it's a better choice for you? Do you have any family at either university that can weigh in? Because that's helped some people that I know.
EDIT: Also, just saw your responses LOL allow me to weigh in:
1. It takes me 1.5 hours to get to Monash atm, and it's killer. Like, really consider travel.
4. No matter which uni you go to, you'll be paying around $300 for them to make social life at uni good. Remember that.
6. You'd be surprised how quickly money can go... Like, it might seem big now (I know I thought the same thing), but shit can disappear fast.
7. lolwut. I'm sure there's lots of people on here that would consider you a mate!