The problem with putting up sightings that are not in flower or have seed cases is that moderators have to be very familiar with the particular area so they can recognise ot on sight. Wait till it flowers.
Agree with ID, because it is a very distinctive species. It has a characteristic foliage colour and shape, a distinctive habit, and an excellent fit for its location. This is the only likely subspecies in the area, see: https://avh.ala.org.au/occurrences/search?taxa=Grevillea+arenaria#tab_mapView