I only use SC versions so I don't use PCI splitters and always use 6+ vga connection power supplies.  Like EVGA 1300 or 1600 (has 9)  I have 84 1070Ti inbound for tomorrow WOOT.

I'm old school, I dont like server power supplies but I get it.  It's just not my preference.

I'll post a pic of my builds soon.  Also just finished making a custom 7 card rack mountable case.  (Had it designed then produced in China)

I have about 120 of the panda like miners and 80 of my frame build (like what you bought) but I made myself.  I will be converting all my 6 cards to 7 cards though for space use and all will be racks when I am done.  

Here's a pic of my rack case with 1600 EVGA T2 and 7 x 1080 Ti   = 4900-5000 SOL