I think it's very risky if you trade all your money into bitcoin, the bitcoin price is now going up, but we have to see any future can happen including the drop of the bitcoin price. It's good for you to exchange half or some to avoid that risk.
Agreed, It is not at all a good option to put all your oranges into one basket. Bitcoin is no doubt the best possible option for investing your money and it can help you make wealthy. Even then, do not go for investing all and all your money into bitcoin.
You do need to have some money in your pocket as your backup so that in case of suffering any kind of loss, you can invest more money to recover your loss.