PLO20 - 13out straight draw vs action

[eule]

first hand at the table so no reads available. AAcrap limp/call is possible but not likely. the thing is that i dont really have many nut outs. So whats my plan? just fold it or call with the intention of letting the SB push so that BB can only call or even push myself here?

Titan Omaha PL, $0.10/$0.20 (Titan HH Converter by Kreatief)

MP2 ($15.62)
MP3 ($22.19)
CO ($20.00) (Hero)
Button ($31.31)
SB ($7.96)
BB ($11.97)

Preflop: Hero is CO with 7[img]/images/graemlins/club.gif[/img], 6[img]/images/graemlins/heart.gif[/img], 8[img]/images/graemlins/spade.gif[/img], 5[img]/images/graemlins/spade.gif[/img]
MP2 calls $0.20, MP3 calls $0.20, <font color="#CC3333">Hero raises to 0.9</font>, <font color="#666666">1 folds</font>, SB calls $1.00, <font color="#666666">1 folds</font>, MP2 calls $0.90, <font color="#666666">1 folds</font>,

Flop: 9[img]/images/graemlins/club.gif[/img], 7[img]/images/graemlins/spade.gif[/img], A[img]/images/graemlins/diamond.gif[/img] ( $3.7 )
<font color="#CC3333">SB bets $2.00</font>, <font color="#CC3333">MP2 raises to 4.0</font>, Hero ???