A good starting point in my opinion is the thread from https://www.hausbau-forum.de/threads/hanghaus-in-der-suedwestpfalz-unser-hausbau-2-0.44121/
Yes, you have a different roof and you would have to mirror it anyway, etc. Here it is first just about getting a feel for it. Regarding the thing with the groceries, I can only say that I prefer to run once with a big basket than many times with each jar from the garden to the upper floor.
I am happy to help if I can anywhere. I don’t check in here so regularly anymore, we are almost finished.
With our floor plan, there was a lot of discussion earlier about whether it makes sense to give away so much living space on hallways. In practice, this has proven to be very worthwhile for us. What looks like a hallway on the floor plan is de facto living space for us, and we use it as well. We have small children and often sit on the floor with them. It is especially nice to have such a large area for that. You perceive it completely as part of the open living area, but there is no furnishing there, so you can nicely play/tumble with the kids.
Our floor plan works as it is but also only because of the huge living space, one has to say honestly.