I think its better to save the coins till next month and not sell everything at this point. I believe the price will increase even more in the following days considering the current trend in the last few years.
So I think its safe to hold the coins and focus on other stuff.

Bitcoin prices will increase more and more, no worry about that.
Keeping a portion of your coins is always the best decision, because we may get a better price in coming time than this so if we sell all our coins today and tomorrow the price increases then we will surely regret our decision, and also if we keep all the coins and don't sell them ever then the price may drop down and then we will also regret that why we did not sell anything when the price was higher.
I would keep 90% of the coin for the long term. I do not plan to use or sell them for the next 10 to 20 years.