Final cut is easy peasy. The new version is a bit of a learning curve for traditional final cut editors but once you “get it” its much easier. Premier is not that hard either.
MPEG streamclip is handy for converting footage into an editing format rather than super compressed raw footage that makes your machine work hard. You could even edit very basically in that if you wanted.
You might think its expensive but it’s the difference between taking 4 hours to edit, finding and fixing problems, dealing with crashes, losing faith, producing something boring naebody wants to watch or
taking an hour to produce something elegant and interesting easily, and then spend the rest of the time going riding and making another film! 4 minutes of Helmet cam footage is boring unless attached to a wing suit flyer.