Buy $50K worth of BTC today at $320 per and sell in one to two weeks making an easy 25% profit when BTC reaches $400, sans one iota of headaches due to the purchasing of and maintaining bitcoin miners. Repeat and rinse every 30 days.
When BTC reaches $400, you mean $40 soon ?

BTW, here in Illinois a new company can get free electricity for 6 full months. Close down shop and open a new one every 6 months under a new corp.