>>718841371
If your aim is just to get A grade horse, I suggest trying the wit build since its the easiest. Only viable for sprint and mile horses. Medium is pushing it, nevertheless doable.

Speed (2-3)
>SSR Kitasan Black (PERMA BORROW)
>any SR or SSR speed card
>pick depending on skills, uma and distance

Stamina (0-2)
>SR Manhattan Cafe
>SR Rob Roy
>SSR Seuin Sky (Front Runner only)

Wit (2-3)
>SR Marvelous Sunday
>SR Daiwa Scarlet
>SR Matikane

>Sprint/Mile/Medium
3x speed 3x wit

>Medium/Long
2x speed 2x stamina 2x wit