Sorry mate, I know you meant well, but I wasn't convinced this was arranged properly. Even a practice day/track day requires fire marshalls and an ambulance on standby (at the venue, not off the property) ... and liability issues (insurance) accounted for. Remember the saying that: motorsport is dangerous. Obtaining a CAMS permit shows you've got the services arranged and ready at the venue, and that CAMS officials are in attendance to provide support on the day (unless otherwise provided for my the venue. In this case, I don't think Tailem Bend does, but Mallala (Clem) can cover this, for a fee). Don't think I'm having a go at you ... I'm all for more track day opportunities, but not at any driver's safety.
Before you question my credibility, I've been a race official for the past 9 years (motorcycle and cars, local and interstate). I'm a licensed CAMS official (and competitor, holding a L2S licence) and I correspond with CAMS regularly. If you want any advice or contact details on who from CAMS is best to see to your needs, just shoot me a PM.