Correct time for a stack a donk?

[Profish2285]

Villain runs at 54/23/1.5, but he was running alot more aggro at the time upto this hand.

Full Tilt No-Limit Hold'em, $0.50 BB (6 handed) Full Tilt Converter Tool from FlopTurnRiver.com (Format: 2+2 Forums)

saw flop|<font color="#C00000">saw showdown</font>

SB ($46.50)
BB ($111.10)
UTG ($50)
MP ($68.90)
<font color="#C00000">Hero ($57.55)</font>
<font color="#C00000">Button ($36.85)</font>

Preflop: Hero is CO with J[img]/images/graemlins/club.gif[/img], A[img]/images/graemlins/diamond.gif[/img].
<font color="#666666">2 folds</font>, <font color="#CC3333">Hero raises to $2</font>, Button calls $2, <font color="#666666">2 folds</font>.

Flop: ($4.75) 3[img]/images/graemlins/heart.gif[/img], J[img]/images/graemlins/heart.gif[/img], 2[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">Hero bets $4</font>, Button calls $4.

Turn: ($12.75) 9[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(2 players)</font>
Hero checks, <font color="#CC3333">Button bets $10.5</font>, <font color="#CC3333">Hero raises to $51.55 (All-In)</font>