Are you flying in to Auckland this time, Roy?
I shall check with some on my contacts over there about storage, and let you know. There's some interesting possibilities on trademe at the moment - that K75S in Hamilton, and the TRX in Palmerston North, for example.
Last year a mate hired an SV650 out of Christchurch, the discounted daily rate for 15 days was $NZ 75. I shall get the details for you, as a benchmark, if nothing else.
You could also check with the local Guzzi community on Facebook - that seems to be their most active communications device there.
The 1100 Sport is not rideable at present, so I'm reluctant to offer that up until it is and well sorted.
Later,
Mal