Long term investment is the best policy here in this crypto world as we already see the holding value, those who are holding BTC, ETH and Dash from last two years r full of their bags with money and all r millionaires and billionaires. Holding for long term always give better and maximum gains rather then short term holding.
I think that Yes, but if he will grow even in 10 times, then manipulate them will be much harder to. All wait to the moon.