What is the best way to "bundle" multiple documents for optimize reader experience?

I have multiple documents which I would like to bundle together deliver to a customer. The files consist of a mix of pdfs and some excel files. The total package (including all files) is about 66 GB. The customer will make the files available over their internal network for employee reference.

 The document I deliver will have a "Start Page" , which is essentially an index with links to the relevant files. I am looking for the best way to put this into practice. 

• Option 1 would be to put all files in a pdf portfolio. Unfortunately I am learning vis-à-vis the Adobe user forum, that in the "new adobe interface" I cannot create links from one page to other files internal to the portfolio. Pushing my readers to revert to the "old interface" is not practical. 

• Option 2 is to embed all files as attachments to the Strat Page, and link to the embedded files from the Start Page. I tried this with a limited number of my files, and it seems to work. However, I am a little concerned that building a single 66 GB file (Start Page + all embedded attachments) is asking for trouble (for example, performance issues). 

• Option 3 is to simply deliver all files in a common folder structure, deliver the complete folder structure with files to my customer, and put my start page at the top level, adding links to each folder/file as needed. Then I have to hope that the customer does not inadvertently move, rename or delete any of the files or folders (and that the paths work over a network). 

It seems to me, Option 2 is best. Are there pitfalls or potential problems with this approach that I should be aware of? Does anyone have any other ideas or best practices for bundeling a large number of files files via Adobe?