Move to Germany. Probably you had to move a bit earlier for you to enjoy the full parental leave here, but grandparents will be a great support. Do not worry much about the small village, actually use the opportunity (lower costs) to invest in your German (learn as much as you can with classes and talking with the people around you). Quality of life in Germany is much better than in the USA. Kita places are hard to f…
I'd definitely pick Germany. Actually, I'd pick Netherland, because that's where kids are apparently the happiest in the world, but Germany sounds like a great alternative.
And grandparents nearby is a boon to any young parent.