I would use 4k@60fps with image stabilization on.
60fps is double the framerate of standard video. Higher frame rates can provide smoother video in high motion scenarios. In addition to that, it lets you do "slow motion" at half normal speed without losing any video quality.
4k is getting more and more common, so I hate recording in a lower quality even if I'm not really utilizing it today. On top of that, it lets you digitally zoom (crop) to lower resolutions without losing quality. If you are really handy, you could also further stabilize the video by cropping to a lower resolution.
Starting with the Hero 7, the digital stabilization on the GoPros is truly impressive. I have a theory they are using the 5.2k camera from the Fusion (no the Max I think) to over capture 4k and digitally stabilizing by cropping down to 4k. I have a Hero 6 and I have the gimbal mount for it and I think the newer digital stabilization is just as good.
A gotcha from 4k video is it uses H.265 (HEVC) whereas the 1080 uses H.264. You need a video card that supports H.265/HEVC decoding, otherwise you won't actually be able to play the video recorded. It is pretty tough for a CPU to decode HEVC in real time. Ask me how I know....after struggling to edit videos for a few months until I figured it out.
Oh...if you want to do real slow motion shots, I would switch to 1080p@240fps. That will let you slow it down 8x without losing quality.