yes, and with choosing the top 5 coins, at least our chance to make a profit will bigger especially if we can do scalping trade which can help us to gain more profit. but still, to choose the right coins is too difficult because I think that not only the top 5 coins that can be profitable but the other coins can also have the profitability too. so we can only choose the right coins by doing analyze in the market and we can collect much information about the coin so we know where the coins want to move.