I think I might just go biomed at melb, better opportunity right now
The grad entry pathway ain't no walk in the path either. Everyone seems to be going for the BBiomed/MD route at Melb and the cut offs for both appear to be going up.
Unless you get a 99.90+, you are going to struggle to get in anywhere that uses UMAT. Still apply definitely, but don't expect much, and if you get an offer, then you have to consider it. I got 55 overall (52/43/69 - 73rd%ile) on UMAT 2010 and nowhere gave me an interview.
Your best chance is to go to JCU in Townsville or Griffith Gold Coast. JCU is interview/ATAR only, whilst Griffith was ATAR only (99.65 was the cut off for last year). But then you have to consider whether or not the move is worth it when you could stay here for an FFP at UMelb if your ATAR is 99+.
You have the whole summer to stress over such choices, I assure you...