It doesn't matter which you are going to choose between these two. It all depends on how you value your earned coin through joining bounties and airdrops , if your objective is to get rewards to be exchanged for your coin and have money then it is your decision to make when to exchange them or just hold it for a while. You have the power to control your own funds, so be wise.
That is true. All depends on yourself, whether you will sell the tokens or hold them. If you think this is the right time to sell them, then do it. But if you think that the price will increase in the future, then hold them. All decisions are in your hand, friend.