OK, we need to get a new car seat for Emma. She is currently just over 20lbs, and very good at sitting up, and about the size lenght wise of a 9 month old. So, what car seat would be best? If she is in a rear facing one now her feet are up on the back of the car seat. So will she be front facing? And that means that the seats dont recline obviously. So in that case, could we get a 9months - 11 years one or would a birth-4 years one be better?