I would recommend you in case that you only have BTC to make sure to buy some other coins as well. What I would do is keep about half of the Bitcoins and invest the other half in other major cryptocurrencies, maybe something like Ethereum or some other top ten crypto. XRP is quite a good example as well, the coin has been doing great and the future potential is quite big. What I'm trying to say is that you should diversify, which means to reduce your risk of losing more money than you actually have to. If you are diversified (invested in various coins) then you reduce the chances of going bust, which is a real danger when you consider just how much volatile the cryptocurrency market really is.