Why are you so sure it will not go even lower? Imagine if in january we are in 200 and the buyer could have doubled his BTC stack if he waited more. Im not sure yet if 400 is a floor. I want to enter the market big time so this is serious for me.
Best advice is to keep a close eye to it, it won't surge 200 in 2 minutes, rather in 2 hours, if you see a steap climb, chances are that it will maintain, only noone can tell you this for sure