Forget it, there are way too many possibilities for you to reconsider
PS: Do you still have that much of the budget left for all the extras?
No, not really. And probably you don't really need it either.
We are now going with the central controlled residential ventilation and saving on the smart home. So those seem to be the priorities.
Somehow it's all just too much. When you build a house nowadays, there is too much you want to have. That really puts me under pressure. Especially with topics that you just can't easily retrofit.
Well, at least I saved myself a third shower
Do you all here in the thread have KNX or something wireless-based?