You can do this programmatically to save the effort.
1. Create a scheduler that you can run on your production author environment.
2. Create a query to run on the path specified to get your list of assets.
3. With the list of assets create a package programmatically using java code:
Packager Service:
packagerService.createPackage(packageName, groupName, filters, request);
Refer to an example here.
Hope this helps.
Thanks,
Kiran Vedantam.