I had never bothered about using the Hero 4 for timelapse. However, for a project using it along with other footage. Any idea how to edit the timelapse from a Go Pro Hero4? How do I fix the fish eye. I use FCP X as well as adobe Lightroom. Look forward to your suggestions.

Normally when I use gopro timelapses I normally edit the frames taken in Lightroom, as you would have used it LR allows to copy editing from one frame in a sequence to all others it's pretty quick .
Lightroom does have a lens correction for gopro fisheye, used it at times with good effect.