Biometrics notice is only for biometrics, they won't do stamping at that time. You did the right thing by taking infopass appt for stamping and you don't need biometrics notice for that. Anyway if your approval notice says do not take any action and wait for biometrics, I heard some offices are not doing I-551 stamping and giving the reason of rapid card production system. Either way it is a worth a try if you have urgent travel needs. Another thing is you may not even receive biometrics notice if you have done code 2 (Only index finger and photograph) finger printing along with your code 3 (All five fingers) finger printing. Hope this helps.
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I-485 AD 4-26-2005
I-485 AD 04-26-2005. LUD 4-26-05, Message: Approved
PP stamped 05-06-2005, LUD 05-09-2005.
Biometrics received 06-09-05
Biometrics done on 06-17-2005 LUD 06-20-2005.
Message change: Card Ordered 07-07-2005, LUD 07-07-05
Message change: Card Mailed 07-09-2005, LUD 07-11-05
Received Cards: 07-11-2005