Your camera/video settings are going to be different for every scene - I think if you try to use a catch-all you will be frustrated far more often than not. What you need to do is understand the exposure triangle and how it relates to both photos and video. From there, you can adjust things as necessary for every scene very quickly and easily.
For video you will want to be around 1/60sec (for 4K30P), going slightly faster if you are flying close to your subject and don't want it blurred too much. Always use base ISO, and only raise it as an absolute last resort when it is still too dark to get a correct exposure without a ND filter.
After F4, diffraction starts to negatively affect the
M2P image. Beyond F5.6 this is going to be very noticeable, so try to stay within F2.8-F4.0 as much as possible. F5.6 is OK in a pinch but I wouldn't be going any higher than that unless there is no other way to get the shot. By F8-F11 the image is garbage, at least by my standards.
Invest in a decent set of ND filters (such as Polar Pro but there are others too) so that you can stay within the above parameters as much as possible.
If you also have a newer iPad and like to edit on the go, definitely invest in LumaFusion - it's a cheap yet fully professional video editing app.
Also make sure your memory card is U3 / V30 rated or you will have dropped frames. Ignore the manufacturer advertised maximum transfer speeds (those mean nothing) and just look for the symbols on the card.
Congrats on the new purchase!