Urban Farming in New Zealand

We are looking at the feasibility of keeping a couple of chooks in the backyard for eggs.

Things we are investigating at the moment:
Coop - probably the Permaculture Chicken Dome as this is small, cheap to build and portable
Type of Chickens - Laying quality, quiet, tame, etc (Rhode Island reds, White Sussex, Orpington, etc)
Local Council regulations