ATP,

To be honest - you'll be in debt and struggle only to realize a life long dream. One which you may never realize if you don't get hired by the airlines. By all means learn to fly - I love every hour I'm up there. IMHO its too late for you to start an airline career.

Get you PPL and fly for fun on the weekends...If you have the time / motivation/ money get your CFI / CFII and teach a bit on the side...

At your age keep it as a hobby..

Good luck in your decision...

-LA