Soon to start; would appreciate advice

In mid-July, I will begin my shed to studio flat conversion.

I'm waiting for detailed drawings, so in the meantime have created a very basic floorplan and list of the order in which I think things need to be done (obviously a lot of detail missing at this stage).

I wondered if anyone could please take a look and let me know if my build order is okay or if I need to shuffle things a bit.

https://imgur.com/a/FQ9UH4H


PS Obviously, I am a novice OB. I will not be doing the bulk of the work. I'll be a general hand on site. But I'll also be responsible for purchasing and ensuring materials are on site when needed.

One thing I am unsure about is where the external cladding fits into the timeline. Obviously it needs to wait until the roller door is removed and a new wall/windows framed in. I also need a new window cut for the bathroom and a new door for the storage room. The shed already has good fibre cement cladding (not asbestos), but since we're going to be messing with it anyway I figured I might as well reclad it to match the weatherboard main house.