I'd probably consider Eastlakes. They are next to Mascot who has experienced significant growth over the past 2 years. Moreover, they are just 15 mins away from CBD and there is a potential big development there planned by a developer called Crown International. Moreoever, what makes me think it will be a good growth area is that Eastlakes has a lot of old housing commission. Usually when this kind of area attracts developers and the development is eventually realized, prices tend to grow quickly as it convinces other developers and commercial entities (shops, restaurants) that this is a growing area.