Personally mymy, I'd be inclined to follow the same path as others have done and have one main 'Bundle' of docs as original/certified for 1 application and a set of individual 'bundles' of photocopies for the other applications.
It's going to be important to have all those applications linked to each other to ensure the Manila Hub know what going on. This is best achieved by an explanatory letter with each application.
Do be aware that each application is reviewed on it's own merits.
Hope that helps.
Informing the staff at VFS will also help too.
Good luck with the applications......that'll be a wonderfully memorable family visit![]()