That might could work for sometime if you just hold bitcoin for 10years straight just like you truthfully told us I think that might earn some decent money and maybe giving you lots of funds in the future. Having 150,000 to invest in bitcoin is quite big if you ask me but not right now. From my perspective now's not the good time buy. But if you could just wait for the price to went down decently then buy a fair amount of it then hold patiently.