If you want take advantage of LISK bonus you should buy now, before most people discover it, my estimate is that Lisk will continue rising in price till first day bonus is over. There are no people selling more LSK because we just witnessed dump few days ago. Those dumpers must hate themselve now, but that is crypto.
In addition every Lisk that gets donated to ARK is effectively removed from the market for a long while, helping the sell pressure. That means that ideally the price will stabilise at a higher level than it is currently or have been for a while.
You know, as long as the market follows rational behavior. So...maybe.