Some things to add to your to-do list:
1) All the penetrations (MVHR, electrical, CCTV, gas, water, whatever etc) through the external walls BEFORE they blow in the cellulose. It's a difficult thing to do afterwards.... It means you will have to start planning external lighting, external power, CCTV, satellite dishes, aerials etc.
2) Fascias and soffitts (not sure of your roof construction) whilst all the scaffolding is in place
3) Make provisions to control the rainwater off the roof, at the earliest opportunity. Fit gutters and temporary downpipes. Get the water into rain water system, if installed but at least get it away from the house.
4) Noggins on external framework for everything that needs to be attached - satellite dishes, aerials, balcony fixings, etc, etc
5) When is your scaffolding coming down? Can you complete the groundnworks for drains, rainwater connections etc whilst the scaffolding is still in place?
You're doing well, keep going....