Sorry, but no.
If they see that NFO is your first choice and they select you for NFO before you're seen for SNA, they're probably not going to push you to the SNA board. Why would they, they already gave you your first pick? Again, that happened to a member on this board. You can't rely on an assumption that because both are on there that they'll seat you at both, because your ranking could ruin that for you. That's the whole point of ranking your list if you want to, it tells them if you get picked up for one higher on your list, don't even put me in for the others.
They're not going to burn one or more quota's if you've ranked your jobs.