Great Video, and Great Seeds!
As far as germinating method - whatever you have done before that works!
If you experiment with the rockwool know that its all about 100% drainage. You can water it basically however you want, whenever you want and however much you want. If it has 100% drainage it will return to 50/50 air/water.
Edit: I tested this a few nights ago as a matter of fact. Just fill the tub. Dunk the cube as long as you want. Then lift it out. It will drain at about the same rate till it reaches the 50/50 then just stop. Second I put one cube on top of the other and got the same result as far as flow, but it took 2x as long to drain. Then I did two cubes stacked and at about half the time I flipped the stack. And there was no flow until the water in the top one returned down. In other words the cubes drain in about a minute or two to exactly 50/50 and stay there until it is used or evaporates.
I don't like the rockwool for seeds. Great for clones. Sucks for seeds. Unless you're gonna stay rockwool through harvest.
Now I'm gonna watch your video a third time.
+Reps if I can.