Floor plan single-family house, 140 sqm with basement

Hello, I have been reading here for a while and have already gathered some good ideas. Today, however, I would like to ask you about our floor plan. We are building on a relatively small plot. Therefore, we decided to build with a basement, since my wife and I both work from home and therefore need an office. Since we have planned for children, we also need space for them. Here is first the completed questionnaire: Development plan/restrictions Size of the plot: 402sqm Floor area ratio: 0.4 Building window, building line and boundary: see picture in the attachment Edge development: yes Number of parking spaces: 2 Number of floors: II Roof shape: SD max 45°, PD, ZD max 30° Style: basically masonry, plaster or wooden facades allowed Maximum heights/limits: GH max 9.5, TH max 4.5 Requirements of the builders Style, roof shape, building type Basement, floors: basement + 2 Number of people, age 2 (30) + 2 children (planned) Office: home office Overnight guests per year Open or closed architecture Conservative or modern construction Open kitchen, kitchen island Number of dining seats: 6 Fireplace No balcony or roof terrace needed Garage or carport depending on costs House design By whom is the design: - planner of a construction company Price estimate according to architect/planner is not yet available Favored heating technology: probably gas for cost reasons If you have to do without, on which details/extensions - you can do without: Carport or garage can be built later - you cannot do without: large office, fireplace Why is the design the way it is now? e.g. The plan originated from a house that we liked. However, it had to be smaller and therefore with a basement. At first, the stairs were swapped. But we did not like that the children always had to go through the living room. Additionally, a laundry chute was added and the fireplace moved from the corner where the laundry chute is now to its current position. For that, a storage room was added upstairs (by the stairs). We do not like it because it blocks the light for the hallway.