We went through this all last year, We run about 90 S9's, 20 741's, and about 70 1080ti and some other GPU's here at our farm.

IMO, you waited too long. Your going to need 1200amps to run what you are talking about. I;'m not sure if you already have a facility or plan to do a build out, but if you plan to do a build out in the US it's going to take a few months given design, PoCo, permits, inspections, and facilities. Power and heat management are going to be huge issues, trust me, and your facilities are going to cost you almost as much as the miners. You are buying miners in a form factor that are end of life. You are buying miners at a premium based on the current price of coin. GPU's too. You are ramping up coming right into the summer months and you are in for all sorts of problem you don't expect. You're going to be better off buying coin and then waiting to deploy your mining operation off the front end of the next gen of mining equipment, probably this fall coming into cooler weather. I admire your zeal, but please take a long hard look at what you are thinking about because getting it going is going to consume your life for the next 6-8 months. You likely hood of coming out ahead at this stage of the game is dubious. A farm of that size has to be cared for 24/7/365. Good luck to you, you're gonna need it.