Even carrying your bags it will could be a race to change planes within 55min in AMS. Just think if you have a delay getting to the gate -- although I imagine that you won't have to clear EU customs, that would be nearly impossible. (Yes, they have a special line for "short connections" but it still takes time to get through.)

I would relax and take the later flight. If you are adventurous then you could even zip into the city and be back in time for the later flight.