Go to the Gold. I was there for a couple of days last year--easy ops but tight ramp. Great people and, I believe Mick Dohan is still associated with them. If you go to Brissy, by the time you taxi to GA, you'll think you taxied SYD. Cairns is also fine, but haven't been in a few years.
Just curious, really 6,000' to 7,000'? I have lots of G6000 time
GF