For a start there is a Air Wairarapa Chieftain Texture download available from:
http://www.arnz.myhost.co.nz/You need to load the standard Aircraft from one of the main sites and then you add the texture and add it to the cfg file, if you havent done this i think the aircraft Texture file will tell you what to do.
This is something that you need to know how to do if you want to mix and match aircraft for AI
Plus a lot of other NZ commercial aircraft are on this site if you havent been there plus NZ Scenery.
Currently there is no scenery that I know of for Paraparaumu and Masterton except for Kapiti Island which is also on this site.
AFCAD will allow you to set up the parking on these airfields to what ever you make them so even with default airports realistic AI flights make it look better
Other NZ sites if you dont already know are:
http://www.massey.ac.nz/%7Eavweb/papers ... /index.htmhttp://www.windowlight.co.nz/ontarget/fslinks.htmlhttp://www.windowlight.co.nz/godzone/