Just found out that electricity in Slovakia, where I have my house is insanely cheap for mining bitcoins. https://www.zse.sk/documents/13852203/Cennik_domacnosti_EE_01012017.pdf. I can provide upon request also last invoice where the details are specific for my house for last year consumption.I asked pro in the mining area to give me advise, and his advise was to invest as much as possible. Once I have my budget ready, I shall contact him. But given the price below 0.04 EUR per kW and huge cold underground space, I should do this ASAP. Given the volatility of cryptocurrencies, I plan to diversify the mining into different ones, but at least 50% focus still on bitcoin. Repayment I can do from my salary, I work in IT, in case anything unexpected will happen. I am fully transparent, I am willing to share upon request photos of the location and my personal electricity invoice for last year. I plan to do this anway even without this loan,but more the better.