Don't waste your time..

You will probably find that your minimum bet is about $2 on the totes and probably higher with the bookmakers.

$100 over 32 bets is about an average of $3.125. If you start at $2, your 32nd bet will probably be around the $4.35 mark.
There is not enough variation there to do anything that your straight bet isn't doing.

Why must it add up to $100? And why have you chosen 32 bets?

And if you are testing it at the moment, then what is the purpose of this thread?