Obviously, yes.
He's already got a gold, so the pressure is more or less off. He will be quite elated and have very high confidence going in, which makes him very dangerous in the 5k, more dangerous than before. He will have to go through the heats, and fatigue from the 1500 rounds will play a factor, but he has proven to be an absolute master at conserving energy and qualifying with the least possible effort.
Basically, a very similar situation to what El G had in Athens...hopefully these WC's turn out the same for Lagat as they did for El G!