I would rotate the house along the contour line and, like , design it with only 2 levels. A rectangular cross-section of about 8*12.5m
Basement with utility room, wardrobe, 2 children's rooms, children's bathroom, entrance
Upper floor with bedroom, master bathroom, living and kitchen area
Attic to be converted into an office or guest room if money is available...
Carport if money is available on the north side
I understood your design like this. North is at the top
In my opinion, there is a neighbor to the southwest. At least a building plot. ?????
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