Sanitizing a Counterflow Chiller and some other questions ...

Hi, I am finishing up construction of a 50 Foot Couterflow chiller. Now I have a few questions about putting it into use: 1. Would PBW and Star San be the preferred methods for cleaning and sanitizing the counter flow chiller after use and before use? Any point in allowing boiling wort to sit in there for 10 minutes prioir to commencing chilling? 2. Would it be necessary to use a pump to pull the hot wort through the chiller in a timely manner? It seems like it would take awhile for the wort to wind its way through the 50 feet of tubing. 3. If using a pump, I assume that the flow would have to be throttled back in order for the wort to come out at the correct temp. Any other tips or recommendations are always apprecieted. Cheers WH __________________________________________________ Do you Yahoo!? Yahoo! Platinum - Watch CBS' NCAA March Madness, live on your desktop! http://platinum.yahoo.com