Our Chicco travel system came with a car seat, base and stroller. A very large and bulky stroller. Now granted she can use this stroller for years to come. It works now, you can snap the car seat into it. And it will work later, she can sit in it and use until she is completely out of a stroller. However, it is heavy and large and inconvenient while she is still in the car seat. So my pointer of the day...
Buy a Snap 'n' Go!
You will love it. It is just the frame of a stroller and it is lightweight. The car seat "snaps" into the frame and off you go. There is a basket underneath for storage, 2 cup holders and a closed container between the cup holders for change or binkies, etc. I keep it in the car and use this when I am out running errands. Because of it's sleek physique it is also easier to use in restaurants and crowded places.
Here is happy travels!