Hi,
Great resource!
To the list of people I would add 'people to bring up the bread and wine'.
Also in the list of items there should be a crucifix 'on the altar or near it' (GIRM 308).
There is a really useful resource on the Liturgy Office website for Masses with large groups (ie really big groups!) It is a good reminder of those things that could get forgotten -
http://www.liturgyoffice.org.uk/Resources/Preparation/index.shtmlJane