Hey Shawn,
Cool pic! (No worries, think I recognised it as mine from the Ruahines trip...)
And cool idea! I'd be really keen to dive the frigate, as well. It's not far from the lab and my flat, but for some reason I never made it. Another freaky option would be the Kapiti marine reserve. The vis tends to be better over there and heaps of cool fish are almost guaranteed.
(I've got my PADI advanced + rescue diver but haven't been scuba diving since several month now.)
Where did you get this cheap offer? It's for a shore dive I assume? Well, let's keep in touch (and an eye on the weather forecast).
Cheers,
Nicolai