AK 2-4, three bet?

[Maier]

Hero has 800 in a 2-4 game on Party, Villian has him covered.5 handed. Villian is not very aggressive, kind of weak-tight.

Hero dealt AK on button, folds to hero,Hero raises to 16, Villian calls in SB

Pot( 34) Flop is K92. Villian checks, Hero bets 30, Villian raises to 90, Hero's action? Should I three-bet here since it does save me money in the event I am beat here. Is three-betting on this flop and not calling/turn-check-raising ever correct

How does this change if the flop is KJ2, two of a suit? Now do I re-evaluate if a suited card hits and he fires another pot bet?