My favourite munro! On a clear day you can get 360 views of Loch Fannich, Slioch, Beinn Eighe and so much more.
It is an 'easy' walk in comparison to the Fannich Hills, Slioch and Beinn Eighe and can be summited in just a few hours.
I would still recommend doing your research on walk highlands and prepare for boggy sections!
https://www.walkhighlands.co.uk/torridon/Fionnbheinn.shtml
https://www.alltrails.com/trail/scotland/highlands/fionn-bheinn