I advise you not to spend all the money you have to buy crypto mining equipment, I think there are still a lot of investment activities in the real world that you can do like for example you can invest in property because in my opinion the selling price of property will be increasingly increase and of course it will be very profitable.
I'm not sure though about crypto mining equipment. Its very expensive plus electricity cost. And then you have to look which coins are going to be profitable. But I do agree with you with real property investments as the price really appreciates overtime or you can even have the property rented so that you can pay the mortgages. I will also go with jewelries because its a good investments and you can easily liquidate it if you needed emergency funds.