Selling everything is not an option because its gonna be profitable soon or layer, this means that you are just throwing away money and that is not smart at all.
I would never sell them all....
Ya i also believe that bitcoin can go more higher than the current price.Don sell it all,if we need some profit,just sell a bit like 20% from our bitcoin saving.After a few month stuck at price $500-$600 finally now bitcoin price already up to $710.Maybe next year after christmas,the price will go up to $800.