Well, you will be looked at in three categories. In each category, your "chances" are 1 in 10 (assuming you have 1 MOC nom and 2 Senator noms). So if you aren't appointed from one nomination, you might be when placed against candidates in another.
Congrats to you Jwagneg! I've been looking for some Ma. posts. I too have received 3 Mass. nominations since Dec 29th. Its been pretty quite so far - I'm hoping everything starts to happen over the next couple of weeks! What part of the state are you from?