canapes in advance

[Thirstysomething]

Having drinks for 70 tonight and damaged my hand, so need to do as much as poss in advance ...
How far in advice do you think I could do the following? (and how do i keep it fresh in the meantime?)

1. Filo parcels with cranberry and brie
   
2. Breadsticks wrapped in parma ham/prosciutto
   
3. crostini with salmon pate
   
4. oatcakes with smoked cheese and pickle
   
5. crostini with mozzarella and basil
   
6. Pesto fried prawns
   
7. Stilton puff pastry parcels
   
   thanks for any advice! i should have been more prepared...

[HermioneHatesHoovering]

Watching with interest!