If you want quick profit then its not a good time to invest but if you want to buy bitcoin and hold it for years then still its good time to buy bitcoin and gold it.
Current price is really good price to make some investments in it as price is really low and if you hold it for next few years then it will help you in earning huge profits.
It will drop further. Bitcoin price is way too high. Many other coins out there that do this better than Bitcoin.
So no. It is not a good time to buy 1 Bitcoin now for investment unless you are:
1. Gambling with it. Or
2. Buying other coins with it.