For my point of view, It is best time for selling the bitcoin, If you have bitcoin, than should sell it now, because now bitcoin already cross $734 and sometime it grew more, and also should know, not buy the bitcoin, when bitcoin already in a high price, like now a days. Because when bitcoin go to high than people start to selling their bitcoins, and in the result, bitcoin's price suddenly come down. So that is a time to buy the bitcoin in a low price.
But I am not ready to agree with you as you can see that the price of bitcoin is increasing on daily basis, and still the price of bitcoin has a good potential to reach to a high price, hope that this rally will continue tell the price cross it’s all time high level therefore it is not a wise decision to sell bitcoin in present time.