Hey Tobiwan,
interesting, we have exactly the same basic floor plan ideas and thought process, and YPG's sketch is the version we are currently aiming for as well. I myself can only manage the 3D home programs to a limited extent and, as already mentioned, leave the clean implementation to the professional. I only have the double garage on the side where the ABSTK (as a airlock) is located as a problem - guest WC window into the garage... mh...
We can take a look at how we or you have solved your ideas, I am very interested in that! The fact is, our first plan was nice but not affordable (11.75 x 9.75), so I don't even want to present it here extensively.
We have also considered very, very many details, walking paths, desirability, windows, doors, etc.... and it is difficult in this form, so we have to work on it too.