Rather than start a new thread just yet, I have booked flights for Melbourne in January for the AO. Tickets go on sale in October. At the moment am planning on the quarter final package and either the 1 or 2 days before the quarters too. Would love to go the semis or final but too expensive. Will see how carried away I get on the day of booking though!
Good luck with whatever you decide to do......Hope you get to see some great tennis either way!