One method would be to calculate the outlay as per dutch betting, then increase the bet size as a percentage of the overlay e.g.

Step1 (calculate Bets to $100)

Hse 2: $5.56 @ $18
Hse 3: $21.74 @ $4.60
Hse 8: $19.23 @ $5.20
profit $53.47 if one wins

Step2
Hse 2: 5.56 * 21 / 18 = $6.48 @ $18
Hse 3: 21.74 * 7.5 / 4.6 = $35.44 @ $4.60
Hse 8: 19.23 * 5.5 / 5.2 = $20.34 @ $5.20

2 wins: profit $54.40
3 Wins: profit $$100.78
8 wins: profit $43.50
Loss if none salute = $62.27

I'm sure someone can improve on that for ya

cheers

edit:
Okay so I may have used your assessed odds instead of what is available (slight error on my part) - juust follow the principle of the example