i feel the basic meditation above should be able to encompass everyone that will be participating...easy enough for those just beginning with meditation and suitable for those that have been at it for awhile...i personally have been involved in a daily gaia meditation with llresearch since 2001...this is the group that channeled the law of one series and they already have 1000's of people participating...this is just a suggestion but i feel it would be a good idea to integrate the hour meditations with them...more info here:
http://bring4th.org/gaia/
peace,
mikey