422 HQ might be overkill depending on your source, you won’t be able to make something higher quality than what it was to start with, but you can make the files larger.
What’s your source? If it’s a 1070p BluRay, you likely don’t need more than ProRes 422 LT. If it’s a UHD-BD, you might need to go to an even larger format to handle the HDR aspects, like ProRes 4444.
I mean, you can’t gain quality but you can lose quality by recompressing, even if the file is higher bitrate than your source. I’m just trying to minimize the amount of generational loss.