its risky ,i suggest you dont hodl coin very long , i suggest you to trading only or hold short time ,because for now bitcoin or altcoin is bad for hold ,i recommend to hold usdt only and trading only,
i choose bittrex because this is one of big exchange in the world ,but i suggest you to trading ij binancen ,because this exchange is biggest in the world ,big liquidity
my 50% crypto assets for trading in the exchange like binance, kucoin ,and indodax to invest for my future ,my 50% assets i used to buy car, home ,and for daily