How long would you be away 5-7 days?
yeah around a week, perhaps a little more depending on how you get there and back.
The track day afterwards the wsbk round is the afterburner day, don't forget that lots of people hand around for it, and from what I was told, last year they overbooked it, with over 50 bikes on the track at each level - that's a lot of bikes, esp given that most people have spend the preceding days watching some good racing on the same track, it seems to me that it's not necessarily the best idea, but each to their own.
What I'm thinking is something like a Ducati in the Snowys - perhaps a 1 or 2-night stay over in the alpine region, followed by a trip down to the island for the weekend's races. The idea being that the journey is the adventure, and a weekend's racing is the icing on the cake.
So, some ideas:
Smaller groups make their own way to the meeting point, allowing people to take as much time as they want.
We then have some planned rides - the alpine way, the road up hotham etc etc.
A social even gathering (of course!)
A planned route down to the island for the races...
Somewhere to stay on the island together?
Oh, any interest from our Mexican friends, or any other state for that matter?