Blind Defense, Crazy River Raise?

[Moozh]

Villian here was 27/15 and seemed somewhat decent and aggressive post flop. Is my river raise good, or spewing? How about the rest?

Party Poker 3/6 Hold'em (6 max, 6 handed) converter

Preflop: Hero is BB with Q[img]/images/graemlins/heart.gif[/img], 8[img]/images/graemlins/spade.gif[/img].
<font color="#666666">4 folds</font>, SB completes, <font color="#CC3333">Hero raises</font>, SB calls.

Flop: (4 SB) Q[img]/images/graemlins/club.gif[/img], K[img]/images/graemlins/diamond.gif[/img], T[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(2 players)</font>
SB checks, <font color="#CC3333">Hero bets</font>, SB calls.

Turn: (3 BB) T[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(2 players)</font>
SB checks, <font color="#CC3333">Hero bets</font>, <font color="#CC3333">SB raises</font>, Hero calls.

River: (7 BB) A[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">SB bets</font>, <font color="#CC3333">Hero raises...

[Jinx]

27/15 implies LAG/TAG, which would imply he would employ the bet/fold line on the river. I like it. His wtsd is kinda important, but it certainly has merit.