There is so much more to the story than "Seniority is everything". That's big academy marketing at it's best. Now, "luck is everything" is a more true statement, but it doesn't sell as well.

Go get a job flying the Grand Canyon or get a CFI job for six months somewhere outside of sleepy Indiana where you can experience something new and do some different kinds of flying. Save your $7100 and go out and build some more experience as a pilot. That way you earn your airline job rather than paying for it.