Apply for a grant from Motability and get the Santa FE or Sorento No issue with space etc then as you’ll all 100% fit
One of those two would be perfect, or even a Kodiak. We tried the grant when we first signed up, they don’t take family members into consideration apparently, only the applicant themselves, and we were told that there were electric vehicles for zero AP that would suit so we weren’t eligible ( they were referring the likes of the E Rifter etc )