Pace
The CAPS system worked pretty much as designed although the initial extraction actually appears to have been a bit slower than it should have been.
Analysis of the coastguard video has indicated that the deployment was at about 5500 feet and that the aircraft was level under the chute having lost just over 400 ft. That is normal.
The initial nose down attitude is deliberate so that the initial deceleration is taken by the seat belts. Once that has happened the explosive line cutters fire on the rear risers allowing the aircraft to assume the horizontal attitude.
This was a normal successful deployment.
As regards my maths, I didn't say the waves were moving at any particular speed, just that they are likely to be moving in a similar direction to the wind and thus, if you try to ditch into the wind, you are likely to be moving roughly into the face of the waves rather than parallel to them.