OP updated as below:
I have been in touch with a few different people and this has emerged as our best bet:
Barnbougle Dunes and The Lost Farm - March 2011
Long weekend event played Saturday to Monday, one of the first two weekends in March (5-7 or 12-14).
Accommodation on-site at Barnbougle Dunes in twin-share (AU$80pp) or quad share (AU$50pp) rooms.
36 holes the first two days, with 18 the final morning, allowing for an evening flight out of Launceston (so 90 holes in total) to Melbourne and its Sandbelt or beyond...
The ballpark price (I am working on something concrete) for three nights accommodation and five rounds of golf is:
Twin-share: AU$550
Quad-share: AU$460
A weekend main event allows for mid-week extra days at the other clubs people wish to see, which are mainly private and harder to access at weekends, when they run members' comps.
Aussie GCA members have already registered interest in hosting extra days at clubs on the Sandbelt, Mornington Peninsula and at two of the best courses in NSW. Other courses could be accessed through an enquiry with the club. Australian clubs are similar to their British counterparts re: access.
All that being so, who is keen? Please indicate below so I can get some sort of field size to use as a guide for booking.