Hello,
I have read the pdf file :-)
I have did similar jobs for whatsapp web app, linkedin, and facebook. I would propose to implement Chrome Extension which would open (and close) new tabs traversing facebook friends. Delay can be set to slow down the process (to simulate normal user browsing) if you like. The result can be generated in any form needed, including csv, google spreadsheet, etc.
Contact me for exact deliverable specifications.
I always stand behind my projects and provide maintenance - accept my bid with confidence.
Thank you for considering my bid,
bga5452