Navaho, huh...
The first thing that I would look at is at what point in the flight an engine failure in the Navaho generates a NTSB file...
you should come the conclusion that if you are close to the ground on takeoff and one of the motors packs it up that the safest couse of action is to close the throttles, select full flaps and crash straight ahead...lots have tried other things and they have crashed at various unusual attitudes that preclude survival! (I've never flown the 'ho, just read the reports on a recommendation from a friend...I opted out).
We that have some level of success in the industry find a place we fit. I like the frieght gig. I really thought that I wanted to do something like SWA or Air Tran and while I wouldn't turn down an interview with either, I stumbled into something that I'm really loving!
I would recommend hanging out with some of the local pilots that do what you are wanting to do. Try to learn if the really like who they are working for and what would be expected of you. Could you handle servicing the lav?
If you really want to go corporate the thing that I have found is that after beating on the door for months they call you after you've taken some other job-for better or worse. Perhapse in my case (jury's still out, hell it's avation and you will never know till it's too late) it was for the best...I never thought I would fly a 74 for instance, but here I am. In that vein, get over the Lear. It's not that equipment, it's the job that matters!
One thing I can say-a corporate outfit won't call you until they need you, like as not that will be at the last minute! I've gotten several calls from people that I was desperate to work for a few months earlier...only to have to tell them that I was either in class or just done with class and thanks but maybe next time.