Mass upload, pulling file name and thumbnail?

1.) I have 3,000 PDF files to upload, can I upload with FTP and sync with this plugin? Or how can I do multi-upload faster?

2.) Is it possible to pull the file name out of a file title? In other words when I upload a file, file name goes automatically on the left side on my page (fixed location) and download button goes on the right (also fixed location)?
Or possibly rectangle box for each file that will pull that information on the page and keep the downloads organized.

3.) Can this plugin create thumbnail from PDF download files (first page of PDF file)?

Thank you,

https://www.ads-software.com/extend/plugins/easy-digital-downloads/