Hold it and if you don't have patience then just try your luck on gambling, that is the only way to multiply your bitcoins in a quick time, but I would suggest to hold it for future.
it will end badly if only to try your luck at gambling. yeah 5btc better to hold and 2 BTC tries to grow by playing trading 
Yeah if you have knowledge and skills related to trading then you should go for trading, as there is less risk involved in trading in compared to gambling as you have some possibilities to make some good profit in trading.