Hey Mate, predominant winds on the gold coast are s/se, however if you are still here in November you can expect some northerley's to roll through. Your 11m switchy will be perfect

. I have 12m and 9m and have only used the 9 once this season. I am flying into Christchurch in September for 2 weeks holiday so pm me and we'll swap details.
Cheers and Beers