Try to get in on the Right seat. . . unless they have right seaters, this is only a single pilot rated aircraft.
And something to think about, the company has no idea what type of pilot you are, or GOING to be. You might be a bad stick, and make poor inflight decisions. So why would they pay for your training, when you might not be the type of pilot or have the skills needed to fly the airplane.
This is like an NFL team hiring a star QB at the age of 2, sending him to the best camps and hoping he is going to the the right fit for the team.
It sucks . . . trust me, I spent most of my teens and 20's (and part of my 30's) trying to figure out how to pay for all my ratings!!
NOW, since you are already working around the airplane, this can ONLY be a GREAT THING FOR YOU!! Because in aprt 91/135 opps, it is ALL about who you know!!
Our company was about to hire a right seater who only had single engine instrument so that he could "assit the capt with his duties". The plane was a merlin, but it is single pilot (althogh just barely). So you never know!!!
Hang in there, be cool with the pilots, and try to fly in the right seat as much as you can!!!