I've got seven days to spend on the North Island. Flying into Wellington. I'll be renting a car and doing a bit of travelling around. I plan on spending the most time in and around Wellington, possibly taking the ferry over to the South Island to explore Malborough. Ideally I'd like to base myself out of Wellington and make short trips out. Is this feasible for places like Malborough and Napier? Or would it be better for formulate some kind of loop?