On my debut showdown i'll go with these:

Caulfield
R5 No 5 So Assertive $11 win
R6 No 1 Bomber Bill $11 win
R7 No 1 In Times Eye $11 win
R7 Trifecta 15,64,5,6,11 1 unit $6

Northam
R7 No 2 Blinded $11 win

hope they go alright