(NL400) Semi-Bluff Check-Raise all-in when board pairs

[LouisCyphre]

<font color="black">Hero (SB): $386</font>
BB: $393.20
UTG: $872.50
MP: $1343.45
CO: $420.70
BTN: $370

<font color="black">Preflop:</font> Hero is dealt Q[img]/images/graemlins/heart.gif[/img] K[img]/images/graemlins/spade.gif[/img] (6 Players)
UTG folds, <font color="red">MP raises to $15</font>, 2 folds, Hero calls $13, BB folds

<font color="black">Flop:</font> ($34) J[img]/images/graemlins/club.gif[/img] 5[img]/images/graemlins/diamond.gif[/img] T[img]/images/graemlins/heart.gif[/img] (2 Players)
Hero checks, <font color="red">MP bets $29</font>, Hero calls $29

<font color="black">Turn:</font> ($92) J[img]/images/graemlins/diamond.gif[/img] (2 Players)
Hero checks, <font color="red">MP bets $60</font>, <font color="red">Hero raises all-in to $342</font>

Pot Size: $494

Villain is 36.3/16.2/2.6 (74 hands). He is the fish at the table. In an earlier hand despite his aggression rating he only check-called flop and turn with an overpair JJ and checked again on the river when a Q fell. It appears he plays aggressive when he has the initiave in the hand and passive if he doesn't.
I called the flop because I am confident I get paid off if I improve.

Is this check-raise a good idea or a bad idea?