When I was looking there were no frogs. There were a few OK but overpriced boats and more than a few toads.
In the end I gave up, brought what was a sailable bare steel hull
. More than 4 years later I'm still fitting it out...
I put a few of your parameters into Yachtworld. There were a few boats that might meet your requirements in Thailand
but most prospects (and there weren't that many of them) were in the US of A.
Given the price
difference it may be possible to fly there, buy there, ship them to OZ, pay the duty+++ and still come out ahead financially.
Even if it costs more the satisfaction of getting what you want may be worth the extra.
My feeling on wooden boats is that, given your probable age range and the deterioration I've observed in boats for sale
in Oz, the chances of finding one in acceptable condition are not good.
A quick search suggests that the Tayana 37
may suit. They appear to be (sort of) still in production and a new one, still warm from the mold
, may not be out of the question.