If you can, get to Westernport. I fish there every weekend and haven't been out in the last month without bagging on Snapper, my PB though for now is only 7kg but that's going to change this weekend. A horrible bycatch when fishing for the reds regular gummies, you'll get at least one on nearly every trip, and Westernport suffers from plenty of gummies even up to 30kg.
Westernport is the go. I fish whenever I can, regardless of the weather if you don't mind getting wet. You've got shelter in any wind no matter the direction, just pick which lee side of French Island or Phillip Island you like, and there are ramps everywhere.
Looking forward to the warmer waters coming down bringing me some of your Mako's in a month or so. If you do consider heading this way (rather than PPB or Corio) please feel free to PM me and I'll send you my number for some more detail.
Dan