5$ total bluff, well executed?

Party Poker No-Limit Hold'em Tourney, Big Blind is t15 (8 handed) converter

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

UTG+1 (t755)
MP1 (t1005)
MP2 (t1900)
Hero (t700)
Button (t485)
SB (t1140)
BB (t1230)
UTG (t785)

Preflop: Hero is CO with 7[img]/images/graemlins/heart.gif[/img], J[img]/images/graemlins/heart.gif[/img].
<font color="#666666">1 fold</font>, UTG+1 calls t15, <font color="#666666">1 fold</font>, MP2 calls t15, Hero calls t15, <font color="#666666">1 fold</font>, SB completes, BB checks.

was the call preflop all right? i know this hand is essentially trash but i think my position and the big implied odds make up for it.

Flop: (t72.50) 8[img]/images/graemlins/heart.gif[/img], 4[img]/images/graemlins/heart.gif[/img], 8[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(5 players)</font>
SB checks, <font color="#CC3333">BB bets t65</font>, UTG+1 folds, MP2 calls t65, Hero calls t65, SB folds.

On the flop i was thinking it would be pretty good getting a flush and catching someone with a lone eight, and hey the price is right so ya im calling.

Turn: (t267.50) K[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(3 players)</font>
<font color="#CC3333">BB bets t75</font>, MP2 folds, Hero calls t75.

turn the pot odds were good enough for a call and becuase he didnt change his bet size im not really convinced that im that far behind, he may not even have an eight. if i had an eight in that spot i would bet alot to force out draws and maybe catch someone with a second best hand... thoughts?

River: (t417.50) 3[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">BB bets t65</font>, <font color="#CC3333">Hero raises to t275</font>, BB folds.

river i miss, but im thinking WTF, it really doesnt feel like he has an eight and if i bet enough it would look as though i slowplayed a monster so my bluff would have credibility yes?

Final Pot: t757.50

Results in white below: <font color="#FFFFFF">
Hero has 7h Jh (one pair, eights).
Outcome: Hero wins t757.50. </font>

last but not least, should i show this bluff to the table, why or why not?