Thanks for all the advice everyone.
As to final output, I am trying three options, Ciba/Ilfochromes, Lambda or backlit. Yet to decide.
Have bought a bunch of 120 roll films (neg and tranny) and will shot a few rolls of my proposed subject.
Let you know when I get closer to what I want to do
Don't know how far into your project you are now, but another (local) supplier I meant to mention, (if you don't have time to use J and C), is:
H E Perry Ltd, 10 Minnie St, Newton, Auck. 0800 103 388. They would be better than Panavision that I mentioned previously, for what you are after.