With that many rigs and so much equipment, have you ever considered setting up a warehouse out of state or even out of country? Here in Canada, we get between 8-15 cents/kw depending on province (in CAD). It might be worth it to spend the flight up, find a few partners, and work things out.
Also same question as above; how did you manage to get so many 1080 Ti's in bulk? I'm trying to build something of my own.
The hard part believe it or not wasn't getting the cards, because we just mixed brands and models, as long as it was a 1080 Ti, we bought it. At the time nobody was really buying them because everyone was land grabbing for 1070's and 470/80s.
The hardest part was getting PSU's, 8+8 cables and RISERS.