The Antique Aeroplane Association Australia AAAA
https://www.antique-aeroplane.com.au/page-1596346
As Squawk says, AAAA is great source of information, spare parts and all round old aircraft fun. The guys at Maitland restore and operate a number of Tigers and are probably your closest place for hands on assistance, but Harvey McBain at Nelson in western Vic is a bit of a guru, too.
Estimated 200 hours pa suggests a syndicate or commercial use. Think about skid v tail wheel if the latter. Regardless, you will quickly prefer grass runways.. Factor in the need for a good hangar and get the fabric checked by a good rag man. Talk to Borg Sorensen at Tyabb about engine overhaul costs.
How much TW time do you have? This will impact insurance rates a lot.
Good luck