I would put some serious thought into filing that idea away in the nice-to-do box if I were you. I spent most of my adult life working toward a career in the 121 airline world and it nearly ruined me in about a years time on the job. I quit, joined the phone company and make a captains salary now. I even bought a Tomahawk to get my flying kicks for a mere fraction of a zero to hero school tuition. Bottom line... It is not worth the investment.