Hey, um, since you're saying you need to maintain a weighted GPA of at least 75% to get a 'guaranteed' place in the JD after your undergrad, I'm assuming you got <99.90 for your ATAR, which means that this guaranteed place is a Full Fee Place (FFP), not a Commonwealth Supported Place (CSP), which means you'll have to pay much, much, much more. Also, you won't have the option of HECS-HELP since you won't have a CSP.
If you're absolutely sure you want to do law, I'd recommend you go for Monash, 'cause at Melbourne you'll have to maintain a GPA of at least 75% just so you can pay excessively to do the JD, while at Monash you can get somewhat similar qualifications at a much lower price and in a shorter period of time. Also, if you do want a CSP for the JD, you'll have to take a test called the LSAT and put in a personal statement.
(I think, so yeah it's probably a good idea to set up that meeeeeeting)