Cowboys Facing Reasonable Bet on River

Party Poker
No Limit Holdem Ring game
Blinds: $0.10/$0.25
10 players
Converter

Table is TAG/Rock except for MP2 and BB who are the maniacs at the table.

Stack sizes:
UTG: $4.07
Hero: $25
UTG+2: $45.55
MP1: $23.40
MP2: $9.65
MP3: $14.45
CO: $4.75
Button: $11.65
SB: $15.89
BB: $48.29

Pre-flop: (10 players) Hero is UTG+1 with http://www.neildewhurst.com/wp-conte...c-cards/kd.png http://www.neildewhurst.com/wp-conte...c-cards/kc.png
UTG folds, Hero raises to $1, 2 folds, MP2 raises to $2, 2 folds, Button calls, SB folds, BB calls, Hero calls.

Now normally I'd reraise preflop to find out where I am;but I felt that one of them had Aces(yes I know I will hear this badly).I decide to call for set value;and with 2 maniacs in the hand if I flop my set I am stacking both of them as neither can lay down TP/overpair.

Flop: http://www.neildewhurst.com/wp-conte...c-cards/4s.png http://www.neildewhurst.com/wp-conte...c-cards/9h.png http://www.neildewhurst.com/wp-conte...c-cards/6c.png ($8.1, 4 players)
BB checks, Hero bets $4.5, 2 folds, BB calls.

So I missed my set-and on top of that this is a bad flop as many straight possibilities are out there,and the card ranges are perfect for set hunters.With checks all around I have to make a play for the pot-I figure if one of them has me beat I can safely fold to a raise with no regrets.BB calls.

Turn: http://www.neildewhurst.com/wp-conte...c-cards/8s.png ($17.1, 2 players)
BB checks, Hero checks.

Now this is ugly.If he was on a draw it's def there now,and a set still has me beat.I could beat;but if he's a trapper he'll only smooth call then make a bad bet on the river that puts me in an uncomfortable position.I decide to check and see if I can draw out on him on the river if he has the set;and if he is slowplaying a made straight and valuebets the river I can fold safely.

River: http://www.neildewhurst.com/wp-conte...c-cards/3c.png ($17.1, 2 players)
BB bets $8.84, Hero calls.

Now this is good and bad.If he sensed weakness and is betting as a bluff I can pick him off for some value;and if he did have me beat with Aces/set/straight I lose the minimum.

Thoughts and feedback are welcome on all streets?

Results:
Final pot: $34.78