2021 early January New Zealand 3 month trip

I'm 32 from New Zealand. Looking at starting in early Jan 2021 starting in Christchurch then 5 weeks in the South Island and the rest in the North Island. I have from the 9th Jan to 11th April. Can see aprox route idea here

First time doing a long tour, so will be starting of reasonably slow till I get the rhythm. Will be going solo however happy to find some people to join if we get along.

Prefer free camping and every 4-5 days getting a place to clean up. warm showers, splitting the cost on paid camping, hotel etc.