Worse case you are not that much of an underdog.
<font class="small">Code:</font><hr /><pre> pokenum -o kc kd qd 5h - ac qc th 9h -- kh jc 7c
Omaha Hi: 820 enumerated boards containing Jc 7c Kh
cards win %win lose %lose tie %tie EV
Kc Kd Qd 5h 373 45.49 441 53.78 6 0.73 0.459
Ac Qc Th 9h 441 53.78 373 45.49 6 0.73 0.541</pre><hr />
If it was me, I push, because I've found I'm just as likely to be up against some thing like this:
<font class="small">Code:</font><hr /><pre>pokenum -o kc kd qd 5h - 6d qc td 3h -- kh jc 7c
Omaha Hi: 820 enumerated boards containing Jc 7c Kh
cards win %win lose %lose tie %tie EV
Kc Kd Qd 5h 584 71.22 212 25.85 24 2.93 0.727
Qc Td 6d 3h 212 25.85 584 71.22 24 2.93 0.273 </pre><hr />
or this:
<font class="small">Code:</font><hr /><pre> pokenum -o kc kd qd 5h - ac qc 6d 3h -- kh jc 7c
Omaha Hi: 820 enumerated boards containing Jc 7c Kh
cards win %win lose %lose tie %tie EV
Kc Kd Qd 5h 530 64.63 281 34.27 9 1.10 0.652
Ac Qc 6d 3h 281 34.27 530 64.63 9 1.10 0.348</pre><hr />