UAV with Oly 9mm on EPM2

I am thinking I will quickly outgrow my Gopro on a UAV (hate the term drone) and was thinking about a set up of EPM2 with the ultralight 9mm lenscap fisheye. The sample images I have seen must have been corrected, didn't have much curvature at all, but I was wondering what others think about this set up, mainly for video of rock formations, waterfalls, etc.  I don't currently have a gimbal large enough for that camera, but wouldn't mind trying to build one.  Anyone have any samples?  I am building my own aircraft, it will be a 500 class hex, so it should have fair lift for a heavier rig.

I know next to nothing about UAV, but if you shoot nature/scenic stuff with a fisheye and keep it level and the horizon in the middle you hardly notice the distortion at all, you can crop a little and hide it entirely too... Or defish. They can be versatile in that regard.

The Oly body cap has a narrower AoV than other fisheye too so that might further mask distortion. The 7.5 mm f3.5 Samyang/Bower/Rokinon FE is worth a look too tho... Way sharper and even more versatile thanks to the larger aperture, not much more expensive (specially on sale), and still relatively small & light.

I really like mine, it's all I used the other day while shooting some caves/cliffs by the sea, I didn't wanna change lenses a lot near sea spray and figured the FE would work better and capture a more unique view than my UWA zoom.