Hi there: I love how focused and diligent you are regarding your Dad's collection. It seems that you may have some great stones there.
I would suggest that there is another website that you will likely find even more helpful. That is because this is a consumer board, so there are only a few who are in the trade that offer you assistance. Although we are no allowed to provide a link or name the other website, I suggest you google gemology websites, perhaps something like the words: gemology online? I have a feeling you will be overwhelmed by the help and knowledgeable responses you receive there.
From what I see in your video - (quality/ value/ costs/ inclusions aside)
It’d be interesting to see what face up color you’d end up with recutting most of the weight at the crown vs most of the weight at the pavilion.
And your fluorescence photos- I can’t tell if what’s popping up is from zoning or just reflection from the torch?