Probably not this year, but 2k seems reasonable. Then again so does $400USD 
$1000 is possible this year. $2000 is not very possible. $400 is not possible if there is no major crisis happen to bitcoin.
$400 could still happen, technically. It could happen after the halving bubble pops.
Reaching $400 again is definitely not impossible to happen. It requires a few large holders to start dumping like there is no tomorrow, and then people will dump their coins in panic making things even worse.