... One could also drastically reduce the costs ...
Yes, that would be an option but even with all the examples you mentioned, we won't get in what we should receive from the sale.
Is it really worth it?
Let's put it this way, we are not the highest bidder. But yes, you have to ask yourself this question critically and for us it is worth it even though it repeatedly causes us to struggle. But it is what it is.
You didn't need to state the standard land value.
Sorry, I wasn't aware of that.
It only gets a bit tight with children.
We have to look at that again in detail.
But with your income and equity, I don't understand the question.
Well, of course I have no experience with financing yet and I find it somewhat "scary" (even including all equity etc.) to manage a payment that is twice as high as our current rent. Especially since there are quite a few uncertainties still in the calculation. That's just a topic where I'm not a professional and therefore approach it with relatively great respect.