Its not good to let go of your bitcoins right now, you should have done it when it was around 700$ at least. In the market bitcoin is priced at 626$ and that would mean a big drop on the monetary value of bitcoins. So i suggest that you should wait for the increase before you let go. At this moment it is best to keep your bitcoins in your wallet and wait for an increase in monetary value.
And I strongly agree,just wait the halving period. Not a good idea for me to sell now,as there are still reasons for bitcoin to rise.Also people are considering to invest in bitcoin after the brexit,hope it will really have an impact on bitcoin.