There is a Vacant Box 7 so I start looking to see if it can assist any animals either side of it.
#6 RENOVATING is a slowish beginner so the Vacant Box won't assist it to get up near the lead.
#8 ESKIMO MAGGIE would probably lead this Field even without the vacant Box inside her.
The two inside Boxes also have good early speed and will be up amongst it.

The Market

8 ESKIMO MAGGIE $2.8
1 RONCHI $3
2 SANGAKKARA $8.5
5 BUBOKN $14
4 GALBA CHRIS $16
3 CREEKS PUZZLE $33
6 RENOVATING $40

TRIFECTAS
8,1 - 8,1 - 2 for $2.50
8,1 - 8,1 - 5,4 for $1.50
8,1 - 2 - 8,1 for $1.50
8,1 - 4,5 - 8,1 for $1
2 - 8,1 - 8,1 for $1

Total Cost $20