Cool Idea mate, it is sort of gambling but if you really want to try this then you can take care house for rent I'm try this thing even if the Bitcoin price crashed just after you sold the house you can wait like 3 to 4 years so that the price can climb again to this price and you can buy your house again. Of course this is the most creazy idea I have ever heard but that's how it works you have to take some risk in order to gain extremely high profit. But always remember there is no shortcut in life to become rich if you play Smart games then play them smartly.