Well i wouldn't say is wrong selling some of your accumulated Bitcoin if the price rises because every investors has there own patterns that's well suitable for them so however if you feel the strategy is fine by you is okay.

Of course if you are holding and sometime in the future you feel there is need for you to sell some of your accumulated Bitcoin is your decision but provided that you don't sell below your buying point.

Although for me in as much as Bitcoin price may rise it can never influence me to sell off my Bitcoin because I have made a decision to accumulate and hold for a long time and there is nothing that would made me sell because I have enough on my reserve funds that will take care of any needs so there is no reason why I should temper with my investment.