I already have the fitting door sign for you:

Okay, enough laughing, and now please back to the factual assessment.
The roof is as it is, now the question is how to properly design the roof terrace, for example.
The total area of 148 sqm is really sufficient for us. The layout, due to the single-story structure, apparently cannot be realized differently with our room requirements.
Of course, everyone has individual different ideas about what is more important where, but it will not work without any compromises (except with an endless budget).
What is currently important for me is to see how to optimally design each room. Perhaps a few cm/sqm can still be squeezed out here and there.
Our architect has now sent the two drafts to our builder. Next week, the exact heights will be leveled and then it should proceed to fine-tuning. We do not like the small windows facing the street yet, we want normal ones without bars in front, and yes, as you pointed out, it makes little sense to have a kitchen window under the carport, and in the other variant 4 it is completely missing.
As said, suggestions for improvement/optimization are welcome!
Thanks and regards, Frank