If you have enough skills and experience, then it doesnt matter to you what to trade, Bitcoin or Altcoin.Im afraid to sell bitcoins, Im afraid that by selling bitcoins I wont be able to buy at a lower price. 
Learning to be smart in analyzing the movement of bitcoin certainly requires time, meaning that smart cannot be done in a short time. Of course it must go through failure to get success.In my opinion, the current bitcoin trade is the right time, because in the last few months the price movements have begun to brighten and will continue to increase. Today the price of bitcoin reaches USD 6196, if you have bitcoin it's better for long-term HODL because my prediction for the end of the year is USD 10,000.