Is this a spewy push with rivered set? 100NL

[The Student]

Villian is 48/4/.4, in other words, a total LAPPY fish. eah, yeah, I know that calling his mini-raise on the flop is spewy, but my question is about my river shove. I think that I get two pair hands to call here often enough to merit the shove (rather than a smaller raise, say to $50 or so). I'm not worried about the straight, and I'm slightly worried about a set.

Thoughts on my river move?

Full Tilt No-Limit Hold'em, $1 BB (9 handed) Full Tilt Converter Tool from FlopTurnRiver.com (Format: 2+2 Forums)

SB ($132.10)
BB ($100)
UTG ($123.50)
UTG+1 ($110.10)
MP1 ($118.15)
MP2 ($100)
MP3 ($70.55)
Hero ($100)
Button ($171.20)

Preflop: Hero is CO with 8[img]/images/graemlins/spade.gif[/img], 8[img]/images/graemlins/club.gif[/img].
<font color="#666666">1 fold</font>, <font color="#CC3333">UTG+1 raises to $2</font>, <font color="#666666">3 folds</font>, Hero calls $2, <font color="#666666">3 folds</font>.

Flop: ($5.50) K[img]/images/graemlins/spade.gif[/img], 3[img]/images/graemlins/diamond.gif[/img], Q[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">UTG+1 bets $2</font>, <font color="#CC3333">Hero raises to $8</font>, <font color="#CC3333">UTG+1 raises to $16</font>, Hero calls $6.

Turn: ($35.50) A[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players)</font>
UTG+1 checks, Hero checks.

River: ($35.50) 8[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">UTG+1 bets $15</font>, <font color="#CC3333">Hero raises to $84 (All-In)</font>

ts-