Wow, thanks Les,
Looks like I'd better stay in the area for a couple of days to get a good feel of the place?
I know that you live over the Border somewhere, would you have any ideas as to accommodation?
Bruce

You could try the Mount Barker Cvan Park. It gets a good review:

https://www.tripadvisor.com.au/Hotel_Review-g499718-d4301512-Reviews-The_Mount_Barker_Caravan_Tourist_Park-Mount_Barker_Adelaide_Hills_Greater_Adelaide_Sou.html

I don't have much cause to look for accommodation round here, so I can't be much help really. Sorry..

Bruce, further to the info from Les, Monarto Conservation Park is a good place to see Shy Heathwrens, Tawny-crowned Honeyeaters and possibly Purple-Gaped honeyeaters, amongst other species.
If time doesn't allow all those places mentioned, go to Laratinga Wetlands at Mt Barker instead. About 40 species in a couple of hours is a realistic goal. About 160 species have been seen here of the 250 available on the Fleurieu Peninsula. As Les has already said it's a great place for Crakes. Lathams Snipe should be turning up anytime soon back from breeding in the Northern Hemisphere. If you see a camo sheet with legs sticking out from it, that will probably be Les.
The reason for pushing Laratinga, is the photographic opportunities.

Thanks Les.
Hi Peter,
You've really piqued my interest now, Shy Heathwrens, wow! Wrens, finches and honeyeaters are my 'Go-To' species and I love trying to trick the camera into photographing these beautiful, small birds. Now I'm going to have to sit down and try to put together a 3-4 day stay without breaking the pension, but giving me a realistic chance at getting to see all these birds on the back of my camera. . . , .
Bruce

Bruce,
At Monarto CP the Shy Heathwrens can often be seen along the marked trail from the car park. Doesn't matter which way you go as it does a big loop starting and finishing at the car park.
I haven't been there for awhile but there should be blossom out now and so honeyeaters.

Hi Peter,
Thanks for your help mate.Over here, Ballarat, we haven't seen a blossum yet, as a matter of fact I have Crimson Rosellas nesting in a home-made nest box in my back yard and I'm feeding them seed at the moment to keep them locally, everything else has gone looking for something to eat? The Council Cherry-blossoms that line the streets over here have just started blooming in the last two days, unbelievable season.
Thanks again for your input. . .
Bruce