Have a look on google earth , Last time i was in mandura it was more a deserted beach area where fishermen went , Fantastic surf and beaches but not many people .
That was 1994 so it may have a bigger population now . also do searches like type into your search bar population of mandura , or whatever. fotos on mandura,
Also , perth is nice but its so far from any where , the most popular cities are the east , bris sydnet , melb ,
my brother brought his kids up in adelaide and sed it was a great kids place , Adelaides considered a big country town .
Sydneys the ratrace , brisbanes the last to become the trendy type place but still a bigger country town
Melbourne is "the most liveable" 53 nationalities , very cosmopolitain , I was there 12 years but the winters got me with the cold wind comng straight down from the snowfields. only 2 cities I know do that , wellington in NZ and melb.

I guess it all depends what your hubby does for a living too,
I heading back to oz in a few weeks to live just south of the QLD border , 10k south of gold coast , surfers paradise. in the Tweed heads area, northern NSW, its a mix of hippies , wannabe hippies, New agers, alternative lifstylers, organic gardners. well to do biz people who got sick of the city. lots of 5 and 10 acre blocks aswell as the normal blocks.
anyway , foosd for thought.
Ray