Sit and stand stroller worth it?

Hi! So when baby number 2 comes our son will be just about 3.5 years old. I’m strongly considering the graco sit to stand as our travel system since it has the bench seat for my oldest but not sure if it’s worth it. He does pretty good at walking but still requests to be pushed in our umbrella stroller sometimes. Not sure if it’s worth buying the larger stroller “in case” he uses it. Anyone have

any experience with this or a similar stroller?