Re: Wallisellen Vs Wildpark Höfli, any advice?
A vote for Wildpark Höfli (Langnau) here because I'm not a fan of Wallisellen. I've been there enough times for Lidl and Glatt and, even when the sun's out, it feels dark there. I rejected a few apartments near the Eisstadium at Oerlikon because the were in the shadow of the hill.
Your son already speaks Schweizer Deutsch, so you have a way into the local scene, and you're clearly doing something right to be accepted for two apartments. I don't know Wildpark Höfli, but you're reasonably close to Sihl City for shopping.
Where I was raised in the U.K., the only black and Asian kids I met were first or second generation British with professional parents. It was only in the cities where I met first and second generation kids who'd grown up in a mainly immigrant suburb, and the difference between them and my childhood friends was incredible. That has to be your choice, but your boy could end up being the only child of Indian parents in a school full of kids with Turkish, Albanian, etc...parents. What I'm trying to say is your son could still end up being in a minority of one, the only difference could be the skin colour of the other kids.