Looks totally fine to me. You already have 1080 transcoding in place, but as mentioned, 4K makes a huge difference, but also, of course, to file size, which increases x4 along with the resolution. And yes, set that 4K30 or 4K60 in the drone...
Betaflight Failsafe works, but no where near as well at DJI. This is as close to loosing a drone 3000' up a mountain as I have had yet. The drone continued forward after disconnecting and came within several feet of hitting the mountain.
I can sort of see why that functionality is there - probably a vestigial function left over from back when DJI had to hold people accountable for their flyings. I imagine I would quite enjoy that little restriction if my UAV was ever stolen ...