Holdig your Bitcoin is best but instead, investing it in Altcoins for trading in short term basis is much better because you can gain more profits from Altcoins.
That's a risky, you can earn 500% after a year or more with altcoins if you bet in a solid one or you can grow slowly your bitcoins.
Isn't easy to predict the best strategy here, maybe spliting the money in 2 or more strategys can be the best option.