I need some help. Soon I will be buying a conv. carseat for my oldest (8months) since we will have the new baby in the infant seat. I will be putting the conv carseat behind the driver seat and the infant seat will be in the middle. I need a conv seat that doesnt lean to far back rear facing. We need as much front to back room as possible. I tried the Britax Roundabout and I dont like how upright she would have to sit and its huge. Any suggestion?? Thanks.