I would advise you not to buy a whole Bitcoin in one go. Rather buy in bits and then make a average and that's the way to earn from it, so even if it rises you make money and incase of further fall you are yet safe. Though crucial for Bitcoin users will be that it holds price of 1900$ any dip here on will cause us some crazy problems those who purchase at high rates. Brace yourself for some periods of uncertainty. Be safe and not greedy.