I will sell my coins only when I see 4 digit price in future till then I have a patience of holding it and will sell only when I am able to earn higher profits.
We can't know if when the price will reach to that extent, so it would be better if you sell them when you see price is quite high like above 800$ or 900$ because it may drop again after that so you would lose a chance of earning more profits.
Yeah that is the right thing to do, do not wait too long and especially if its major pump as it will not stay there longer and will fall back soon, so its better to sell when price is on top.
I suggest you to try to sell upcoming christmas time and Selling will be also not the best option that you can do now because the value is not even that high now and that is the problem, it would be nice that you can earn a lot of money with it but we should wait for good pump at top value...