Hit a set - 2 people calling hard?

Paradise Poker No-Limit Hold'em, $0.25 BB (9 handed) converter

MP1 ($6.25)
Hero ($24.50)
MP3 ($21.45)
CO ($25.00)
Button ($23.60)
SB ($59.05)
BB ($20.01)
UTG ($26.90)
UTG+1 ($17.65)

Preflop: Hero is MP2 with 9[img]/images/graemlins/diamond.gif[/img], 9[img]/images/graemlins/heart.gif[/img]. CO posts a blind of $0.25. SB posts a blind of $0.10.
<font color="#CC3333">UTG raises to $0.7</font>, <font color="#666666">2 folds</font>, Hero calls $0.70, <font color="#666666">2 folds</font>, Button calls $0.70, <font color="#CC3333">SB (poster) raises to $3.1</font>, <font color="#666666">1 fold</font>, UTG calls $2.40, Hero calls $2.40, Button calls $2.40.

Flop: ($12.90) 9[img]/images/graemlins/club.gif[/img], T[img]/images/graemlins/diamond.gif[/img], A[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(4 players)</font>
SB checks, <font color="#CC3333">UTG bets $1</font>, <font color="#CC3333">Hero raises to $6</font>, Button calls $6, SB folds, UTG calls $5.

Turn: ($30.90) 6[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(3 players)</font>
<font color="#CC3333">UTG bets $3</font>, <font color="#CC3333">Hero raises to $15.4</font>, Button calls $14.50, (All-In) calls $12.40.


Final Pot: $76.20

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I just started this table. I can't tell you why I went all in on the turn, It seemed like the right thing to do. I was elated to the rainbow flop as their are usually flush chasers. I realize now there this is a possible straight on the table after the turn - something I failed to do while playing. I think I did this because the big raises preflop.

What do you think. Especially preflop - I always seem to just lag in with a small to medium pocket pair. I think the results are interesting. Ill post those in a bit.

EDIT- the converter got the blinds wrong, its 0.1-0.25, 25$ NL tables at paradice.