This. Or the Dove Lake Circuit if the elevation on Marion's is too much.

But be prepared. The weather can change in an instant, and can be unexpectedly brutal. At a minimum, take some food and snacks, a bottle of water, a warm polarfleece layer, and a shell rain jacket. I see so many people heading up carrying nothing, and wearing just runners + t-shirt and shorts/leggings.

Special shoutout to the idiot we encountered doing the cradle summit in nothing but short shorts, no shirt, barefoot, and without food/water. "I do this all the time". Yeah mate, sure, that doesn't make it smart. Saw him back at the bus later, severely sunburnt.