Been pretty slack but here is a quick update
Kitchen splashback, range etc in

bathroom is almost done now, the bench is my wifes grandfathers old workbench, I love it's rustic nature and signs of life, it has a new job now.

put in the hearth and slow combustion heater

Pretty much spending my limited time and pocket money doing what I can.
The building preforms very well i.e. warm in winter and cools well with all the cross flow venting in summer. All the 'systems' work well, solar hot water runs well with the gas booster turned off, grey water and composting toilets are great and the led lighting and green GPO's all work really well. From that perspective I would not change a thing as it is very comfortable and cost very little to run. We did get a $120 electricity bill over winter, none of which was for electricity

The supply charges and gst (on exported and imported power) made up our entire bill.. I would love to be off grid but battery technology is not there yet.
I intend to start on the last two pavilions this winter, I feel they will come together quicker as I know what I am doing now (kind off), have some great helpers and the structures are less complex.
Steve