It's up to your appetite regarding Risk. Majority of bitcoin enthusiast wanted to make money so they invest without thinking of the big risk involved, that's why you will hear that they got rekt or lost majority of their money. So ask yourself, are you will to take the risk? Or are you that kind of person that are afraid of risk and emotional when it comes on investing?

If you wanted to invest, then just put money that you can afford to lose and then see how it goes for you.