Currently DS is behind passanger seat.

But when I get his new car seat installed he will be behind driver and baby will be behind passanger, DH did want DS to stay where he is BUT the issue is that DH is tall and needs car seat back to drive and no way a rear facing seat will allow that so rear facing must stay behind passanger.

Did ask man about putting DS in middle when I was getting his seat turned around at 14+ months) and he said middle for an older child can be painful as they touch and hit baby or chuck stuff on them.