$10 NL on UB

I know i shouldn't raise A8o in EP but it was the best hand i've seen in a while and was getting bored.

Villain seems fairly decent, nothing out of line.

Ultimate Bet No-Limit Hold'em, $.10 BB (7 handed) FTR converter on zerodivide.cx

MP2 ($20.05)
CO ($17.36)
Button ($6.13)
SB ($4)
BB ($1.40)
UTG ($2.56)
Hero ($12.85)

Preflop: Hero is MP1 with A[img]/images/graemlins/diamond.gif[/img], 8[img]/images/graemlins/club.gif[/img].
<font color="#666666">1 fold</font>, <font color="#CC3333">Hero raises to $0.45</font>, MP2 calls $0.45, <font color="#666666">4 folds</font>.

Flop: ($1.05) 9[img]/images/graemlins/spade.gif[/img], 4[img]/images/graemlins/club.gif[/img], 8[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">Hero bets $0.55</font>, MP2 calls $0.55.

Turn: ($2.15) T[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">Hero bets $1</font>, <font color="#CC3333">MP2 raises to $2</font>, Hero calls $1.

River: ($6.15) 8[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">Hero bets $2.5</font>, <font color="#CC3333">MP2 raises to $13.65</font>, Hero calls $7.35 (All-In).

Final Pot: $29.65

What should i have done on the river? I figured he either has a boat or an overpair. A straight or a backdoored flush is highly unlikely. Getting 2.5:1 odds, does an overpair push the river enough for a call to be profitable?

Also, how's my play on the flop/turn? I hate being out of position on the turn after my c-bet get called.