Okay, how about this then. At least 70 points if you manage to get the box first 4, with an extra 30 points up for grabs if you're good enough to get them in order.

Points:
30 - Winner in top 4 picks
15 - 2nd horse in top 4 picks
10 - 3rd horse in top 4 picks
5 - 4th horse in top 4 picks

Bonus points:
10 - Winner rated on top
10 - Trifecta in order
10 - First 4 in order
10 - First 4 in top 4 picks