Whats My Play?

[Bulla]

Villain has been pretty aggressive the whole tourney basically is all i have on him.

Level VI (100/200)
Table '63175424 276' 9-max Seat #5 is the button

Seat 8: Hero (4155 in chips)
Seat 9: villain (6175 in chips)

*** HOLE CARDS ***
Dealt to Hero[Qc Kc]

Hero: raises 400 to 600
villain : calls 600

*** FLOP *** [As 5c 4s]
Hero: bets 1000
villain : calls 1000

*** TURN *** [As 5c 4s] [8c]
Hero: bets 1800
villain : raises 1800 to 3600
Hero: calls 755 and is all-in

*** RIVER *** [As 5c 4s 8c] [8s]
*** SHOW DOWN ***
Hero: shows [Qc Kc] (a pair of Eights)
villain : shows [Js Ks] (a flush, Ace high)
villain collected 8610 from pot

*** SUMMARY ***
Total pot 8610 | Rake 0
Board [As 5c 4s 8c 8s]
Seat 8: Hero showed [Qc Kc] and lost with a pair of Eights
Seat 9: villain showed [Js Ks] and won (8610) with a flush, Ace high

We are only an hour in and nowhere near the bubble. Better ways to play this? Just looking for different ways to play this whole hand.