Not to mention, San Francisco is not known for having cheap real estate, nor is it known for having cheap electricity. My last (residential) bill to PGE, I paid $0.50938/KWh at peak.
While business rates may be different, California cannot be a sensible place to host power-hungry infrastructure - our electrical rates are easily 5-8 times of other locations within the US
Where will the cluster be hosted ?
May I suggest that you get your IP transit from he.net ?