I'd start with googling best places to raise a family and start digging in. I'm sure the lists change from year to year. I recently moved and started this way.
Also, there is no utopia so the "best place to raise a family" in the US might have other negatives, you just need to prioritize.
A low-traffic (no through-traffic) suburban area with a park or parks within easy walking distance and bike paths. I can think of lots of areas like that around here (northern California) and I'm sure elsewhere.
We live in such a neighborhood and it has been excellent for kids. They can walk or bike to the park in less than a minute, there are multiple playgrounds and large fields to run around.
This is nice, but I just built my first ITX based SFFPC in the GEEK G1 SE and would consider it to have fewer frills, while not requiring assembly, and about half the price. I don't see it mentioned too often so wanted to share it as an option if you want to go this route but keep it simple. Great airflow too :)
https://www.geeekstore.com/shop/geeek-g1-se-miniitx-case/
