Hi Gabba, can't help you with locations in Sydney but seems you've got plenty of location advice to go on with. I can say that carp, of which there are numerous types, are good fun and do put up a reasonable fight. I can tell you that various baits work well and it's fairly easy to get a school to hang around. Worms, maggots and freshwater shrimp are great live baits. Easiest and best is bread. I've used plain white, wholemeal and multigrain and all work well. Get 2 pcs of bread, wet 1 of them and blend between the fingers with the dry piece. This makes a dough that stays on the hook for a while. Carp are top and bottom feeders so i either use a float with a few split shot or a light sinker to hold the bottom. I prefer a larger hook with a wide gape and this can be covered easily with the bread dough.Carp have large rubbery mouths and hooks need to be sharp. Make sure you have a gaff or decent landing net as a large carp will be hard to drag out of the water. Good luck.