If you're not using your equipment anywhere other than ZQN it likely more cost effective to simply hire stuff when you are there. Cheaper than excess baggage fees/shipping, insurance etc and without the hassle of lugging them everywhere with you.

There are several different wine tours out of Queenstown, generally half day. Most do around the Gibbstown area.

I second the advice to select NZ over QF. I've flown into Queenstown a couple of dozen times on both airlines - NZ has never had a problem other than minor delays, QF I've ended up in IVC once, narrowly avoided the same fate a few times by offloading myself at CHC, declined their offer of a bus ride from CHC a couple of times, failed to get out of Auckland a couple of times, been locked into the gate area at ZQN for a few hours once, and on time several times. QF in winter has an atrocious record for ZQN flights.