Equity is 85% saved on its own + former shares. But we are reasonable savers, see costs.
Yes, I am calculating with a repayment rate of 1800 euros. Total net income has actually been over 5000 euros since then, but I do not want to rely on the flexible part. Prefer worst-case scenario. My wife will also gradually move away from part-time in the medium term. The timeframe is more like 3-4 years, when the child is in elementary school.
But yes, financially this is a different level, which is why I am really stressing over whether it is worth it. Many things are possible, but then you probably have to pay more attention to expenses. If anything goes wrong during construction or there are significant additional costs, it will be unpleasant.