I think 120 will probably be the number of initial offers sent out with potentially 65±10 on a waitlist. This way, they don't risk having 185 people accepting the offers (regardless of yield statistics).
If It helps, I'm 22 too! I know you want to get some feedback to assuage (or exacerbate) your concerns, but the fact is, at this point, it really doesn't matter. The 17th is just over a week away and you'll get your answer soon enough! None of us can really tell you what they're looking for. So, don't worry about it too much--I'm sure you'll do well!