So far we have confirmed
Vincent
Martin
Peter
Brian
June
Damien
Eddie
Paul ( not available )
George (poss)

If we go to PI as well how many more can we invite, we might need to limit the numbers initially to see what we can handle in the space and time we have. I can't see there would be any issue with Mark in using PI to make the announcement ( we can ask before we post) , as far as I remember Mark is a member here.