Top pair and flush draw, is this overkill?

[SABR42]

Villain is way too loose pre-flop, and generally terrible.

PokerStars No-Limit Hold'em, $2 BB (6 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: 2+2 Forums)

MP ($208.10)
CO ($235.55)
Button ($104)
Hero ($303.35)
BB ($155.20)
UTG ($197)

Preflop: Hero is SB with J[img]/images/graemlins/spade.gif[/img], A[img]/images/graemlins/spade.gif[/img].
<font color="#666666">2 folds</font>, CO calls $2, <font color="#666666">1 fold</font>, <font color="#CC3333">Hero raises to $9</font>, <font color="#666666">1 fold</font>, CO calls $7.

Flop: ($20) 9[img]/images/graemlins/diamond.gif[/img], 6[img]/images/graemlins/spade.gif[/img], A[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">Hero bets $13</font>, CO calls $13.

Turn: ($46) 4[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(2 players)</font>
Hero checks, <font color="#CC3333">CO bets $22</font>, <font color="#CC3333">Hero raises to $281.35 (effectively for $214)</font>

Is this overkill? I checked the turn to raise, but raising to a smaller amount seems awkward.

Should I lead the turn instead?