: I think it’s excellent to come up with your own ideas and not let conventionality act as a mental barrier. To be successful at this, you need a clear goal. That seems to be missing, and without a goal, you can’t hit the mark.
An indication of this is that you don’t describe with a single word what kind of lifestyle you want for yourself and your family. Especially the children will have different needs over the next 15-20 years in the house and will influence your life in a colorful way. Considering this architecturally during construction means enjoying good quality of life for a long time.
Just one concrete example: Think about your youth and today’s teenagers. If things go well, they have an illustrious circle of friends and meet spontaneously, cheerfully, loudly, thoughtlessly, losing track of time, and blessed with social attention gaps, here and there. That is wonderful and valuable for teenagers. For their parents, it is wonderful and valuable not to have to experience all of that directly. Your house design plans architecturally for conflict-ridden years, because these fundamentally welcome people will have to invade your private space, or they will be banished from the house. The latter would be a displacement of conflict.
Thinking this way leads to architectural requirements that are not considered in your design - and a life with cheerful, sociable teenagers is only one of them. I would solve the desire for an open house and future living situation with additional stairs. For example, an outdoor staircase to a balcony to the children’s rooms and a garden access to the basement. Suddenly, the house looks quite different and more considerations arise.
Another concrete example: When looking at the upper floor, I think: Someone definitely wants a large open space (very cool if well done). The sleeping area, the own bathroom, and the dressing area should also be comfortable (very understandable). And the hallway needs generosity (basically fine). What is planned as space for the children is relatively little by comparison. Don’t get me wrong, children with so much space and their own small bathroom are by no means badly off. My point is that both children together don’t even get a third of the upper floor, even though only the two children will live there and not just sleep. The prioritization seems to have been bent in the design phase.
You have a budget that allows some room for maneuver and only self-imposed time pressure. You have the opportunity to invest in good architecture. A good architect builds you a wonderful shell for your life and not just beautiful walls and a roof.
My impression: You have many wishes and aesthetic ideas that you try to realize in the drawing. I believe right away that can look very good. Unfortunately, in doing so, you forget the essential, namely to consider an idea about everyday life in the house.
You are creating your own time pressure. Better do it really well. Unfortunately, the design is a good way to turn a lot of money into dampened joy of life.