Think that with the auction of FBI price will drop to 530-540 and then can be move up !
So, HODL and wait to 540-550 for buy

If that is the case, it'd be stupid not to sell. You should sell now, and buy back when it hits the 550.
But how can we sell now how can we earn if the value is too low is what you said really the best thing to do, is it really helpful for us to earn more?