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.
Yeah, trading with altcoins for USD and BTC is quite profitable. One thing need to be known before generating a buy or sell order is the picking out the right coin in the peak move. Else need to wait holding good amount in fiat, so than on a dip can buy good number of bitcoin and hold for a better profiting after years.