The biggest thing I learned is that you'll spend the first few years of homeownership getting the property up to your standards (cutting back trees and brush, planting grass) and fixing all the small things the previous owners put off fixing (looks like this doesn't apply to you!).

I've heard from friends in the business that a lot of new builds have inferior materials because of scarcity and inflation in recent years. Not saying this is true in your case, but keep an eye out for things that break or are of poor quality.

In general I'd say stay up on maintenance of your appliances and how your house is heated. You don't want it to break in the middle of the winter!

Get a pest company to come spray for insects around your foundation twice a year - it'll cost about $400-$500 per year but will kill the bugs that will damage your house over time.