Ok, it really depends what kind of life style you have. Are active? Biking, rollerblading, beach? Etc. I wouldn't worry about investing a lot of money to accommodate newborn (graco carseat) within just a few months they will be sitting up etc.
My primary stroller I have a bugaboo and the board ( 4 y and 3 months) and once the baby starts sitting up I will be using double jogger for my longer days out.
If you are a mom on the go, like myself and you kids might fall asleep on the go. The most important thing is a light weight of a stroller, reclining for the kids comfort, canopy for the strong sunshine and the basket.
Lots of luck and success!