Looking for 200-300 km hikes in Aus or New Zealand

[habeebetee]

Hello, I'm an American trying to plan a two week or so through hike in Australia or New Zealand. I'm going to be studying abroad in Byron Bay starting August 31 but want to do a hike on my own. I know next to nothing about trails in Australia and New Zealand so if anyone could recommend any good ones, I'd appreciate it. I'm a pretty experienced hiker so I was thinking 200-300 km over two weeks. I'm pretty open to location, just so long as I can somehow make my way to Byron Bay by August 31.

Thanks!