I don't see any problem with asking how many open spots they have to a particular SA. I would wait until after you get a Nom to ask what type of slate they are submitting. They can tell you, but they may choose not to. But at the end of the day, it doesn't really matter, you don't have any influence. Your only opportunity was to be the best you could be. Have the credentials to be at the top of the slate so you are either their principal or the SA first choice. And if not at the top, then slug it out in the national pool.
Yes it would be nice to know that you are in, I can feel your pain, but we will all know by mid April. Only a few more weeks till Noms are due, and a few more months till all those envelopes are posted. Patience, patience, patience. Keep telling yourself. It may ease the pain.