The first thing for you to do is request Ven. Tsering, the monk at Rinpoche’s house, to recite the Vaishali Sutra five or six times in your presence.
The other thing is to listen to Rinpoche’s recording of the Vaishali Sutra. This is available as an MP3 on FPMT Radio: http://www.lamrim.com/archive/fpmtradio/mp3/16k/2004-FPMT-16k-KLZR-RTAP-01-Sutra_Entering_Vaishali.mp3
The following pujas should be done before the operation:
1) Mamo-trükang: five times. This is best done by Gyuto monks in San Jose. George would probably have to discuss the costs with Ven. Donyo. It is an extensive puja and may take all day.
2) Lu-zong: one time. Geshe Drakpa can do this.