Yes I am using the DPS2000-BB's. I am running 4 S3's per PSU. I bet I could run more but I only have 8 PCIE cables per PSU.
I am pulling 33 amps @ 240V for 24 of them so 330W each. That is only 1320W per PSU. I could put 2 more easy on each PSU if I made new cables with more PCIE connectors.

Good. Thus you can keep your PSUs unstressed and maybe more efficient? By the way, what happened with you Novec cooling project?