Just some food for thought,
At the University of Michigan the Det has about 80 cadets on average. 99% of the time they commission about 9-12 Lts every April. Out of those 9-12, 3-4 put in for a rated slot, be it Pilot, Nav, or ABM. There has been between 75%-100% pick-up rate for rated slots.
Out of my class, 4 put in for Pilot slots, 3 got them, and the 1 dude who didn't ended up getting a Nav slot.
Again, that is usually the way it works at Det 390. This coming year though they are looking at having about 25-30 kids putting in for rated slots, so it will be interesting to see how it pans out.
Bottom line, go somewhere you like, study something you like, and work hard without f*cking over your bros and just enjoy college, you only get one chance at that. If you work hard, everything will fall into place.