Probably not the advice you want to hear but you should just buy some Bitcoins directly along with some promising alts like LTC, ETH, XMR, XRP, etc.
Because there is a crazy surplus of miners out there, even with these low prices the difficulties are still sky-rocketing and even with your cheap power, eventually you will be reaching break-even point levels.
Most of them are blind cause they think their cheap power will save them from themselves, they cant accept the truth that buying coins and wait is better, his 80k usd could become 400k in few months, if he buys mining equipment he will never get even 100% in a year even if coins they are mining increase a lot.