are western Sydney house prices going to increase due to the airport

thinking to buy a double storey house in mount druitt or Rooty hill, OR in a new area: colebee, marsden park, etc. but the thing is news areas r more expensive and the ones which r affordable r tiny and cheap material. looking for a house to actually live in for short term but also make profit, what areas better? and will mount druitt and Rooty hill prices also go up in coming years cuz of the airport?