I suppose this is a good plan and you are less risky when selling some and keeping some. This time the market is very bad so be patient until the market rebounds. It will bring a lot of profit for you. trust me.
Exactly. And you should try to consider the coins for selling you want to eliminate form your portfolio or you think could run down in future. This way, your way of minimizing risk will become more effective. Also the option of buying some coins unlocks when you have the price of the coin lowered in the market. Right now, you can own BTC, ETH and BTH for the values are down. Hopefully it will pay off when the market is green in some point in future.