Note that in Business class, if crediting to Qantas you'd earn 660 QFF SC's; you only need 40 more for QFF Gold (QF SG) which does get lounge access.

That's only one* Business/First class segment on BA/QF/AA/CX etc anywhere to attain oneworld sapphire status and oneworld lounge access rights.

Also, if you join in April and subsequently attain status you will have it until at least end of April 2011.

*eligible flights {i.e. earns points/SC's} (or two full economy or four discount economy)