YES, i agree that today is the good moment to buy bitcoin as the trend is still going smoother and there is some more room left in the running uptrend. You may consider entering on dips and then hold your bitcoins for another next big rally.In case of litecoin too you can buy and hold for long term, but you here the volatility and  the spread is little big so trade short term in litecoin and exit with big profit margin otherwise because of high spread you won't be profited in big way.