I've got $80 to work with.
The investment is 20% of the BANK multiplied by the Percentage Chance of the animal.

WANGARATTA Race 4

8 STEP OUT $3.10
3 HOTLINE MINE $4.20
2 STYLISH RUBY $6
9 VINTAGE BOND $10
6 BLACK PRADO $14
4 WHERE'S GAB $27
1 MELROCK STAR $29
5 HERE WE GO $30

A dog takes 18 starts to register its first win makes you wonder if that win was a fluke.
I'm not too keen on HOTLINE MINE
STEP UP looked very strong when it wore down STYLISH RUBY.
And VINTAGE BOND got knocked back to last at the turn and still qualified so must be the best of the rest.