I need your ladies' help brainstorming for a solution!

My SO wants us to move in with his parents when we're married. They are poor and don't speak English and have expected to live with him their whole lives. And he has expected that he'd end up living with them too and supporting them. I cannot live with my in-laws... I just can't ? What are some viable alternatives I can offer him that compromises with both sides??
Thank you!!