Hi,
About 4 or 5 kilos but the rivers are full of them. 2 hours drive to Warwick and the river Condamine is full with them never having seen a hook. Basic tackle, I had a cheap telescopic rod last time as its all that would fit in my work bag , float (small piece of peacock quill), 1 x BB, size 12 hook and bread, sweet corn if you want to go high tech. I also use barbless hooks and slip them off without banking them as they are classed as vermin and you are not supposed to put them back.
Also caught a long neck turtle that freaked me out.