Capo,
Like what Magic said, you might as well book the ticket on Orbitz where you can fly nonstop on KLM all the way to AMS. Besides you'll get to experience a better in-flight service too. The date you provided came back with $389 rt.
For a savings of $80.80, I would forget about the measly online booking miles.
Important thing is your flight miles here...
If you care about getting some connection miles, it's only for $9 more via MSP or DTW.
Check it out...