9 x 9 meters I personally find absolutely sufficient for a kitchen as well, but for example the representation only up to the window reveals and then the deluge (i.e. exterior wall infinitely thick and blending into the property) is very unusual to read.
The exterior wall is irrelevant for the kitchen planning, although you can depict it, it makes the planning somewhat more difficult.
When I click on an object, it shows me how far it is from each interior wall. I can then simply move something without having to subtract or add the exterior wall each time.
The planner also has the advantage that everyone can determine the distances based on the squares themselves. One square = 10 cm.
One possibility would be to align the current bedroom and the northern kid’s room and ultimately mirror them by removing the dressing room and moving the partition wall slightly south. Especially considering the master bedroom under the roof (see below). Later also the possibility for the children to have equally sized rooms. … Initially, we will certainly want to sleep on the same level as the children, especially since the one-year-old sometimes gets lost in our four-room apartment at night looking for the parents’ bedroom. But in the long term, see the considerations above, and then the smaller kid’s room could be repurposed.
I completely agree with ypg there. Plan the floors exactly how you want them long-term. So directly upstairs a large room with a shower bath (or at least a sink and toilet). And where you currently plan two children’s rooms and a bedroom, move walls again. Personally, I would send one child under the roof. Lazy as I am, I wouldn’t want to have to walk two floors up to my bed in the evening. Ergo: a child under the roof with a small bath. Below: you with bedroom, one child’s room, nice large bathroom, small storage room (vacuum cleaner, cleaning supplies for the bathroom, towels?). Until the older child moves up (starting school could be a good time), the two little ones can share the large children’s room.