Chewing advice station wagon

Hello, I need your opinion. Starting point: family 2 adults, 2 children (1J and 5J), no pets. I need a vehicle for daily driving into the work (almost only highway 60km, speed 140-150 km/h), 1 – 2x year holiday, usually 2 weeks North Sea. Also 1-2x occasional visits to family in the east (simple distance 800km). So far I drive a Ford Grand C-Max 1.6 Ecobooster and am absolutely satisfied with the car. Wonderful engine, detour Since this is now approaching the 170,000 km and I honestly want to change it, I would like to exchange it for another model. In this order: 1. Ford Focus Tournament 1.5 Ecobooster 150 PS 2. Again a Grand C-Max 1.5 Ecobooster 3. Opel Astra 140 PS 4. Opel Zafira 140 PS 5. Maybe, but actually outside the budget, a Ford Mondeo. Everything as a maximum annual car, up to 25,000 km. Actually, I wanted the Ford Focus, because the GCM is too big for daily commuting. I only drive a lot of air through the area…. But after the first test drives I am not sure if the focus is not too small. Somehow the trunk doesn’t seem sooo big and also the space behind me worries. Sure, in everyday life no topic, but for the holiday rides? After all, a pram with (if only a Quinny) still needs about two years. The two Opels were actually my choice, because the 140 hp engine has a rather mediocre reputation. But I still have to test the two of them. Therefore, no opinion yet. However, the Grand C-Max has somehow risen over the last years in the price. Matching models are actually only available from 22,000 EUR in the area. Since you could almost already find the Mondeo beko What would be your opinion? Does anyone have any experience with the focus with 2 children and holiday trips? How can you manage? Or would you advise me on GCM or Mondeo, or on one of the Opels? Or on a completely different vehicle? Best regards Daniel