Hazlewood in gives you 4 Quicksyou'll be happy giving the ball to for the full 10 overs. Maxwell and Watson take care of the other 10, a bit more if someone's having an off day. Smith, Clarke and Finch can be chucked the ball if necessary.
Alternatively, if you still feel that's not enough, you need to shift either Haddin or Twatto up to opener, drop Finch and bring in Marsh for that lower order and extra right arm pace.