Oh man, can you leave your bickering here? Do it via private message.
As I said, I don’t like the draft at all, neither visually nor functionally. Obviously, they really want this unusual (and cost-driving) building shape. So just a few fundamental thoughts from me:
[*]I consider the cost estimates you have for such a house invalid; the 7 in front, as has been mentioned here several times, is probably more accurate. If you can live with that, okay. Otherwise, I strongly advise a conventional house (rectangular shape) with a pitched roof. With a lot of effort, you could reach the 5 in front – certainly not with the intended construction. You should be aware of that. If that’s okay with you, then
[*]If I choose such an unusual shape, I would make it the center of my house. For the “wow” effect. Meaning: this corner is the center, where my main living space is, because if I already spent a lot for it because I like it so much, then I want to enjoy it after all. The main living area belongs there. I would see a very individual cooking/dining/living area there, but if the kitchen is to be separate, then the living area should be there, spaciously open to the garden. I could even imagine an opening in the roof structure here, so you can see it, with a gallery or something like that. Then it works and makes sense. Here what makes this house unique is shamefully hidden in the hallway.
[*]Then logically not place the entrance there, but where the kitchen is located (in one of the two side wings, doesn’t matter where). I also prefer the kitchen facing the garden. You will grill in summer, sit outside, live outside. Running a marathon into the kitchen for every glass of water, every beer, every salt shaker is annoying. But if anyone absolutely wants the kitchen facing the street, then let them do so. I have noticed this more than once: there are quite a few drafts where homeowners already plan their personal fitness studio as standard. Be my guest!
[*]If upstairs the (open?) living area divides the house into two parts anyway, I would make one side for the parents, including the sewing room and a parent’s bathroom. The other side for both children’s rooms and also give them a small bathroom. Children’s rooms open to the garden. If there is space left, a small utility room for laundry, very practical (I say from my own experience). How big does the sewing room have to be? And doesn’t it make sense to have it near the utility room for laundry? So if I sew, I also need my ironing board – and you need that whenever you have laundry. So it makes sense to plan both close together – just as a thought.
[*]Exterior views: I find them terribly boring and dull. As I said: I would place the living area centrally and open it entirely with glass to the garden. Towards the street rather reserved windows (possibly higher-placed bands of windows). The building shape is quirky – adapt the exterior views to it, otherwise it looks like “trying but failing.”
[*]Think about what makes sense, where you can save walking distances (because otherwise you have to walk unnecessary distances for the next 30 years), and don’t assume “we have it like this now, it works.” “It works” would be personally not enough for me for a house that costs over half a million. I would look for the optimum. And in my opinion, this draft is still miles away from that.
[*]One last remark about the closed kitchen: if you want that, then do it, but listen to the opinions especially of mothers with small children – they usually find it very pleasant to be able to keep an eye on the kids when they play in the main living space and you have to do something in the kitchen. What are the advantages of the closed kitchen for you, or why are you so against a room that contains everything (cooking/eating/living)? I don’t want to impose anything on you, but think about it. We have no children but an open solution and I love it. I don’t want to be locked in the kitchen when I cook and my husband lounges alone in the living room. That way we always have contact, I can send him to the basement if I need something or ask him to plan the drinks, etc. I find it practical *g* and when there are guests, I am always right in the middle in the kitchen, not locked away in the kitchen because I still have to do something.
Just chew on that a little.