That is a lot of money mate. You will be rich later in the future. But you never know what the value is in the future and that is bad.
It is so hard to predict and that is not good. You dont know when to sell or buy it.
You must to take the risk and just sell it for the right moment.
13 bitcoins is very big amount, you need to do trading with all your bitcoins which is the best idea to get rich soon.