Van/7 seater with space for 3 child seats in a row – up to about 7000 €

Hello together, since our Insigina will become too small in the future, I am currently looking for a 7 seater, in which 3 child seats fit in a row and thus option for grandma or similar to the ride is given. It will drive mainly my wife, i.e. gasoline because a lot of short distances (kiga, shopping etc.). In addition, it should have an automatic transmission. Currently we have in mind: – Eurovan (Citroen C8/Peugeot 807), 3L V6 automatic – but mostly EZ 2004. Too old? – Citroen C4 Grand Picasso or Peugeot 5008. Unfortunately with Turbo and in the case of the C4 mostly with the ESG6 – which probably can cause problems. – Zafira B, 1.8l with Easytronic – but no 3 single seats on the rear seat and therefore possibly not suitable for 3 children’s seats. Budget is probably more like 7000 – since the Insignia will no longer drop. (2.0 CDTI, Cosmo, Automatic, 180tkm) Did I miss something on the market that I should take a closer look at? Greetings, Ben