i think so risky if you Holding bitcoin a long time , may be just 3-6 Month it's good . but , if you already got cheap or profit you should sell your bitcoin , and waiting dump again .
Its risky right but its good because your bitcoin will remain if you hold it for a long time. But if you want to make more money try to trade it to other type of coins here like altcoins so that it will grow and you can save more money.