This collection of caches has nothing to do with the Church Micro series in the UK. Given that the Australian 2016 census indicates that No Religion and Jedi Knight are the fastest increasing classifications of the optional religion question "What is the person's religion?" it is not surprising that there is surfeit of empty churches that have been repurposed.
Alawoona Methodist Church was built in 1933 and closed in 1968. Two for one. The small building behind it was the first Methodist Chapel in Alawoona built in 1918 and used until the 1933 church opened. The two buildings were constructed from local limestone and brick. There is no visible foundation stone.
To find the cache location check how many windows are on the west side of the 1933 building.
=2 Windows = S34° 44.373 E140° 30.549
=3 Windows = S34° 44.549 E140° 30.373