400NL - Valuebluff after floating?

[willw9]

Villain here is running 19/14/2.5 and seems pretty solid. Preflop is not totally standard, but I like to mix it up in position like the rest of us.

Full Tilt Poker - No Limit Hold'em Cash Game - $2/$4 Blinds - 7 Players - (LegoPoker Hand History Converter)

SB: $400.00
BB: $400.00
UTG: $1,490.50
UTG+1: $364.30
Hero (MP): $421.30
CO: $30.00


Preflop: Hero is dealt 8[img]/images/graemlins/diamond.gif[/img] 8[img]/images/graemlins/spade.gif[/img] (6 Players)
UTG folds, <font color="red">UTG+1 raises to $14.00</font>, Hero calls $14.00, 3 folds

Flop: ($34) 3[img]/images/graemlins/club.gif[/img] 9[img]/images/graemlins/diamond.gif[/img] Q[img]/images/graemlins/heart.gif[/img] (2 Players)
<font color="red">UTG+1 bets $22.00</font>, Hero calls $22.00

Turn: ($78) Q[img]/images/graemlins/spade.gif[/img] (2 Players)
UTG+1 checks, <font color="red">Hero bets $54.00</font>, UTG+1 calls $54.00

River: ($186) 4[img]/images/graemlins/heart.gif[/img] (2 Players)
UTG+1 checks, Hero ?

The flop here is fairly standard. He checks the turn to me, and I stab at the pot as planned. A Q is a huge part of my perceived range here, so I can fold out stuff like T9, TT, JJ, and possibly KK/AA. I occassionally get called by a SD or something too. River is where I'm a little confused. I still think his range is fairly wide, comprised of TT/JJ/KK/AA, maybe some pairs below 88 if he's a thinking player, and some 9x combos. Can anyone find a bet on the river, or do I have enough SD value vs. his range to check it?