So now, as a mostly silent reader, I’ll also add my two cents.
If I were you, I would strike before someone else snatches it away from you. Financially, it might be a bit tight at first. But if your wife goes back to work in the next few years, it can only get better. I think you probably won’t find a house like this cheaper ever again.
My wife and I also bought a similar house from 2004 last year for almost the same price in Ba-Wü. It was also sold privately from an inheritance. The price was really great and we were really lucky to get it. It was a total coincidence that we even found out about it. You can’t get luckier when you get such an offer. We also had to decide and submit an offer within a week. There were 5 or 6 other interested parties.
Financially, with about €5400 net income, we are very comfortable. However, still without children. When children come, money will be a bit tighter for a while, but it should work out. We also brought in about €110k in equity and therefore only took out a loan of €340k over 30 years.