You could use Magic Bus and do the Tranzalpine Experience tour and then add the Catlins/Milford combo on. Should be a minimum of 7 days then.
Any reason why you want to go as far south as Invercargill ? You'd probably enjoy the Milford Sound extra rather than the trip to Invercargill. But it does depend on your reasons why.
I went to Invercargill, and I also did Stewart Island and the Catlins coaster route back to Christchurch and enjoyed it but spent the majority of it on the bus, off the bus, take some pics and then back on.
Not sure about the public transport connections, I would reckon they go to all the same places but you'd have to check timetables etc as to when they leave each day.
Magic, Stray etc all require you to stay overnight in certain places. |