You are welcome to advise the OP to build even bigger.
Sure, 1m deeper, then the island fits freely as well. No, seriously, the island has to be rotated against the wall, then there is roughly 1.1m to walk through. And the seats are not necessary either; if you are already around, better directly at the table. The island would be for me only for cooking + workspace anyway. Otherwise, consider the other suggested floor plan that allows enough space. The word "main passage" is triggering something right now; with car/bus, the front entrance is the main path today, but by bike you walk through the terrace door, shoes and jackets pile up on the sofa, and I get annoyed. Maybe a reason to force the family via the floor plan to use the main entrance. :)