Not fully. Yes, Bitcoin is a great potential coin and you should hold onto it but do not sell the alts in your portfolio for bitcoin as they can lead to more profits and that too in a short period of time.
Like, Ethereum is currently with a market capital of $43 billion. Hence, the coin has seen a dip of 30% in the last month itself and the coin can cross the $1500 mark easily by the end of 2018 which will yield you with good amount of returns.