House purchase possible? Your opinion

Hello,
I have been reading in the forum for a while and am considering buying myself and whether that is possible.

I looked at a property that would be available for 250,000.
Half-timbered house with double garage and terrace.
The property was completely renovated 10 years ago: new windows, everything new - electrical, sanitary, heating, etc., except the roof (slate, which is in good condition).

The house also has a granny flat which could be rented out or used as a holiday apartment for tourists.
([Located in the spa town, the property attracts many tourists])

Operating costs are 280€
Additional costs 26,000€ without a realtor because the sale is private.

Own information:

Income: 2200€ net
(Without allowances between 100-300€)

Wife works part-time: Income 900€
Without side jobs that amount to 200-400€

Children: 2, one more planned
Child benefit and maintenance amount to 900€

According to the household budget book, we have 1800€ free disposable income without rent. (Savings, food, insurance all included)

We would like full financing, have little equity (saving for 1 year 10,000€) but could still get 30,000€ for the additional costs from my family. The [Baukindergeld] would then be refunded privately to my family for the money they would give me immediately.

And with the possibility of renting out the granny flat (very sought-after in the area) or as a holiday apartment.

Is a purchase realistic? Or is it too much? The bank said in the first conversation that it would be possible.

I know I could save, but the property and [Baukindergeld] are now, not next year...

I am not a high earner like some others here, I know that.
What do you think?

I personally find it completely fine, even as full financing. Go for it...

What do you think?

Sounds plausible and doable!

Do it!
(Will you receive maintenance for longer?)

Thank you for the feedback, normally I hear "you're heading for trouble."

Child support will be paid for at least another 7-8 years since the children are from their previous relationship. I thought I would finance it over 10 or 15 years with 2-2.5 amortization and at the same time pay into a building savings contract which is for the follow-up financing. And during that time, I would put the extra money I get into special repayments. Because after 10 years, there will be less or no child support anymore. I would then compensate for this with the rental apartment or holiday home. My mother would even move in with us in retirement age since she lives in the city and rents are expensive, she would move to the countryside with us for little money.

Seen this way ...

3100 net (I will omit maintenance) for 260k I consider quite tight