So, and now another idea: rotate the house only 45° (so that it is parallel to the street). Just Google "K2Architekten Glueckauf Vier," they solved it perfectly there. You would have to mirror it for you so that the entrance faces southeast, but I can easily imagine that.
Since you already noted it as a minor point anyway: forget the garage! A carport near the street and a nice pathway to the house, possibly with a branch to the basement/ground floor and upper floor. You have so much space, that feels much more natural and spacious. And of course, it significantly saves budget and eases access issues like heights, driveway, etc. And yes, you might get a few raindrops then... but is a 10m walk really that bad?