There is quite a bit of custom work involved with the Wollombi website. The template they are using is the Wollombi template named after their site since it was developed for them. It has not yet been officially released only due to me not yet having time to write the documentation for it.
Depending on what exactly you are liking about the Wollombi site, this template may be all that is needed. But, as I said, there is also quite a bit of custom work. It is also a somewhat complex configuration.
Perhaps if you could give me details on which features you like, I might be able to confirm if the template is all you need or not.