I am with Rob on the lighting setup in general, as I think it is of better value to experiment and find one's own. I never document and take notes of my lighting, may be I should:)?
I don't use HSS with 645z in the studio. I used my portable Flashpoint 360 lights at 1/64th power (thus very short flash duration, as I recall, near 1/10000) with highly reflective modifiers. Bumping ISO to 800 on 645z was sufficient.
I used HSS with D800e previously. The issue is that recycling time becomes too long and I hate wasting power, even though there s plenty in those batteries:) With the settings mentioned above I could shoot multiple frames per second, but I also found that to be a waste. Shooting just a single frame during the jump seems to work exactly right. With multiple frames one does not know what is being captured.. might as well use 8K video.. With a single capture per jump one needs to get a good feel of rhythm with the model and master around the shutter lag. That's pretty much it.