10/20NL, 6max Set of Aces when Flush card comes

[fuzzylogic]

No-Limit Hold'em, $20 BB (6 handed)

Hero ~($3600)
UTG+1 ~($2000)
Button ~(3500$)

Button seems to be good player (28/20 after~500 hands) and is able to pull out some tricky moves.

Preflop: Hero is CO with A[img]/images/graemlins/spade.gif[/img]A[img]/images/graemlins/diamond.gif[/img].
UTG Folds, UTG+1 Calls(20$), Hero Raises (80$), Button Calls(80$), SB&BB Folds, UTG+1 Calls(60$)

Maybe I should be raising a bit more after limper?

Flop: ($270) K[img]/images/graemlins/club.gif[/img]5[img]/images/graemlins/spade.gif[/img]3[img]/images/graemlins/club.gif[/img]
UTG+1 Checks, Hero bets $200, Button calls $200 UTG+1 Folds.

Should I have bet more? I almost never bet the full pot on the flop, don't know why.

Turn: ($670) A[img]/images/graemlins/club.gif[/img]

Flush card, but now I have a great hand too. Whats the best line to take from here? I have 3320$ left and Villain has 3220$.