price will down and down and down. so sell your coins now before price is lowest than now 
i'm already sell all my bitcoin and wait price down under $200 i will buy again bitcoin
i'm already sell all my bitcoin and wait price down under $200 i will buy again bitcoingood luck with your selling. waiting for the price to go below $200 might not happen at all. however, it might go down to very low $200 level. but it's definitely not worth selling now and hoping to buy back a little cheaper.
Because when you buy again you have to pay big comissions (if you deposit from credit card) or taxes like sales tax, etc...
Its better to buy & hold forever, or until btc reaches 1 million $, then buy a lamborghini directly with it.