Some are predicting the Chinese will start selling off before the deadline (right now they appear to be buying) because of the difficulty to cash out thereafter, most may just sell a portion of their holdings. The trend will definitely continue after the deadline and we also have the terms of the Fed, Silk Road, auction TBA.
The Chinese have no reason to panic sell. They are very resourceful people, and can travel abroad without restriction. Their bitcoins will still have the same value after the 30th as before, and if they need to convert to cash, they can do so.
As for the FBI + SR, there has been *no* announcement as to the date of the sale or how it will happen, so that isn't affecting prices at the moment.