Greetings to you in Finland.
First it's QANTAS (without the U) - don't be mistaken for an American!
November is getting busy for travel to Australia (coming into summer) so depending on whether you are planning on coming at the end of the month or earlier, availability might become an issue.
However, with the financial crisis who knows what might happen as to specials.
Lounge access is OK and BA code share with QF on the kangaroo route so miles and status will be credited but you might want to have the ticket purchased with a BA code rather a QF code.
805GBP is about $A1,600 at present rates - an average price but have seen better.
Had to know if the loss leading fares will continue for that time of year - natural demand might mean that they don't need to discount as much as winter and QF capacity has been cut on quite a number of routes recently.