Personally, I think the ground floor has too many corners. Because of this, the bathroom access is really inconvenient. A guest toilet without a window can and should also be avoided in new construction. Or you should consider whether you really need a guest toilet in addition to the main bathroom. In the kitchen, you don’t really have much space, also because of the doors. So, not much space for kitchen furniture and storage for dishes, etc. Just consider whether the storage space is really enough for you. The two small rooms that you called storage rooms upstairs, I doubt that they are well usable since they are still under the 150 cm mark. Or are they not meant to be rooms at all? What you should really consider is whether you really don’t want an eaves overhang. As far as I know, this is difficult to seal and the eaves also serve as facade protection, which would be especially important to me in the case of a wooden house with a wooden facade (if I understood you correctly).