That my friend is the exact question my women asks me nearly every week.
it would be great if you could include more technical details regarding the set up and so.
Well done by the way, and good luck!
I'll post more pictures / videos once I'm done (i.e. have time) with this marathon of construction, setup and configuration. My days are mostly full of setting up systems, wiring, making deals, dealing with the state/county and crooked contractors... I'll post more images in a couple weeks - give or take. Everything you see is some version of an S9. Some I've been running since 2016 in my initial data-center to a couple hundred that were new in the box. Approx 130 miners & 8 more 60 amp iec309 receptacles to wire and I can take a breather.
If you have specific questions let me know.
Either that's a good guess or ?
For a little less speculative math try here:
https://diff.cryptothis.com/
As I eluded to in replying to mikeywith it's new construction so getting to 8PH is -1 part finishing the electrical runs/receptacles and -1 part waiting on the last machines to arrive. Plus a few parts working out the kinks in airflow, filters, machines & power supplies with the issues you can imaging from used equipment, etc.
We went with 100% used s9's (even the new ones were from miners that never made it into business due to county/city moratoriums - mostly - and had them sitting in storage units) - we picked them up when the market bottomed. As one reply above suggested getting to 5-8PH with S15s would be a major financial undertaking. I'm playing the numbers and the quickest way to 8 was used equipment, the quickest way to 16 is using the income from that used equipment to upgrade (which isn't actually the plan).