Hey mate, I study Law/Finance at la trobe and I've had a great experience. The people here are extremely friendly, and I find the atmosphere to be quite sociable and less intense and competitive than you would find at say, UoM or Monash. I have a few mates that go to these uni's and tell me that people 'befriend' you on the basis of what you can offer them in terms of academic help. That's extremely subjective but yeah, it tends to be quite laid back.
As to which degree to pick, finance is a good one but you can also do business and major in financial management and a few other finance majors. The first few core subjects are the same for business/finance/accounting so you'll see people around with these subjects. For me personally, the timetabling usually results with me being in the finance/business subjects with other law students doing law/business/finance etc and these are the people you are usually associate with.
As I'm in first year, I found that it's very easy to do well. If you just work semi-consistently for all subjects you can easily achieve HD for most if not all subjects. Especially the business subjects. One of my first semester subjects accounting, had no idea what was going on and I crammed 3 days before the exam and got 85. Not recommended, but yeah.
I am doing criminal law now and you are expected to read about ~50 pages on average every week of cases and readings but no one really does that except the mature age students lol. Like I said, everyone is pretty laid back but intelligent enough to still do well.
I think the ATAR for the double degrees range from 93-97. I got into straight law on 2nd round offer with 90.65 though, then transferred mid year to law/finance (was debating whether to go with law/science or law/business/finance).
Feel free to ask anything else!