Update

Finish taping roof
Roll all existing tape to affix properly
Tape edge around roof perimeter (very roughly cut insulation)
Insulate back door
Tape west edge of mezzanine
Install remaining 3 ground floor lights
Source and install 2 mezzanine lights
Lower attic stairs by 75mm
Install pneumatic air supply
Build external enclosure for dust extractor
Install dust extraction piping
Grind off protruding screws from electrical install
Install sink
Create cover for mezzanine lift area
Edge openings
Add balustrading
Finish screwing flooring on mezzanine
Reinforce crane mounting point
Centre winch over hole

Lights now up, ceiling taped.  Knocking off some long-outstanding tasks.