Graco Snugride 35 car seat

I've pretty much decided on the Graco Modes travel system, but the car seat has so little head support. It seems like the car seats with safety surround have too much padding around the head, so I don't think I want to buy it separately. I'm nervous about using an after market newborn support like the cushions that you can add. Any recommendations?

Here's the snugride 35 that comes with the travel system

And then the snugride with safety surround