How safe is it?
Im not sure if you want to invest your money with bitcoin but bitcoin is really trust worthy you wont regret it once you choosen bitcoin as your personal currency if you are going to invest money then you should learn more about tradings it can help you out to growing money or bitcoins here.
We can't guarantee safety to invest in long term with bitcoin. Because if you are going to hold for a long time. There are sometime that the price as you hold it or invest with it, the price is going to increase and decrease so that is where the safety I'm talking about because you don't have assurance that you are going to be able to get profit with it.
For me if you want to hold 1 bitcoin for a long time this is not recommendable, i think if you have 5 bitcoin and above that is good capital to hold because it will generate big profit if the price goes high in the future and your 1 bitcoin is good enough to start trading method.
Yes 1 btc is good capital to invest in trading but not enough to make you rich in long run, if you want to make good profits only by holding them then you need to have higher amount of coins.