Perhaps I should have concentrated on R6 at Ballarat instead. I had them rated this way:

46.0 - 7 Damos Rose
45.0 - 3 Destina
43.0 - 9 Moonlight Bandit
42.5 - 6 Sexy Lady
34.5 - 2 Flying Grange
33.0 - 1 Karikuri

Meanwhile, it's now a slow track at Grafton, so I'm not as confident about my selections in Race 6 there. These changing track conditions are a real pain.