Hi Konstantin,
5) The reason you want to minimize the ESR is because during transient, the peak current on both VPF and VNF could be 1A (all 8 channels on).
6) We don't have any official recommendation for ESR. But I would say 0.1 Ohm is a good start.
7) The equivalent ESR won't be ESR_p1uF/4. But it should be better than ESR_p1uF/2.
Regards,
Charles
