Looking for a convertible seat for the in-laws car, for occasional use only. They will soon be getting a Ford Fusion Hybrid so I don't know how big that is. DS is currently about 14-15 lbs and is 8 months so we will need it RF for now, but they'd also like to use the seat for another grandchild (12 months) and keep it for a few years when the kids are FF. Any recs?