4/180 multiway multistreet mess

[Kimbell175113]

First hand of the tournament.

PokerStars No-Limit Hold'em Tourney, Big Blind is t20 (9 handed) pokerhand.org hand converter

Button (t1500)
SB (t1500)
BB (t1500)
UTG (t1500)
UTG+1 (t1500)
MP1 (t1500)
MP2 (t1500)
MP3 (t1500)
Hero (t1500)

Preflop: Hero is CO with 8[img]/images/graemlins/diamond.gif[/img], 8[img]/images/graemlins/heart.gif[/img].
UTG calls t20, UTG+1 calls t20, <font color="#666666">2 folds</font>, MP3 calls t20, Hero calls t20, <font color="#666666">2 folds</font>, BB checks.

Flop: (t110) 6[img]/images/graemlins/heart.gif[/img], 5[img]/images/graemlins/heart.gif[/img], 2[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(5 players)</font>
BB checks, <font color="#CC3333">UTG bets t100</font>, UTG+1 folds, MP3 calls t100, <font color="#CC3333">Hero raises to t555</font>, BB folds, UTG calls t455, MP3 calls t455.

Turn: (t1775) 4[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(3 players)</font>
<font color="#CC3333">UTG bets t180</font>, MP3 calls t180, Hero calls t180.

River doesn't really matter.

What do you guys think about my flop and turn play? Both are questionable, of course, and I'm not sure at all what the right play is each time.