I think BTC can drop to 5k and continues down 
Not agree , I think now bitcoin is gonna see best time ever soon the price of bitcoin will be high and it will never stop growing even at the bad condition, 5k is not price to become worry and sell, but it is time to hold and buy more, so it has started to grow because of high speculation and high investment every passing day, I am sure at December 2018 price of bitcoin will rise up to 20k.
5k mostly will be a dream for those people who just want the btc price to come down for no reason or just because they want to buy at cheap rates forgetting that even the current price is cheap when you compare the price of 18k which has peaked some months ago. So get set for the bull run in coming months.