Putting it out there, whilst it's difficult, it's definitely not impossible to get into the JD program at Melbourne if you want to keep that as a potential option. The CSP average last year was a WAM of something like 76%, and apparently 155+ on the LSAT is enough to get you by; both of these are very much achievable granted that you work hard and prepare thoroughly. In fact, to anyone who suggests transferring, I'd also point out that you'd need a WAM of around this level to transfer into a law program at Monash anyway (although as Nina rightfully pointed out, evading the LSAT is always nice :p).
Of course, if you're dead set on being secure about having a law degree (which is completely understandable as well), apart from the Go8 universities Macquarie is apparently solid, especially if you're interested in business/commerce. If you're really aiming for a 50 in English though, you can probably get into the ANU combined law program at least.