Ok here are the updated diagrams.
Attachment 2405
Ignore the weird angle on the right side of the tank part. Just didn't realise until I finished it lol
Was focusing too much.
The room area on the right is going to be done last, maybe not straight away either.
It's just for ease of getting in to the tank naked. So I don't have to get in with a towel and then hang it up inside the tank. But I'll have to do that for a while at first.
It will also have a seat there so I can sit for a while between long sessions.
I will be trying to order all the wood on Monday. Since I work on the weekends and the timber yard is probably shut anyway.
This is an exaggerated cross-section picture of how the base is going to be constructed.
Attachment 2406