2d drawings struggles - howto set line size

I’ve always avoided making documentation in Rhino - I do not enjoy this part much. But from time to time I have to.

So I wonder what is the correct approach? How do I set line thickness? I know I can set line width in properties… But when I layout those there’s an issue. When I set A4 layout and try to fit object that’s larger and I zoom out all those line weights, annotation settings etc are getting scaled as well. How do you cope with it? For example if I set line thickness to 1, and arrow to 5 I’d like to achieve it in layout drawing that will be printed.