Hey Ben, seems like your financial life is much like mine! Although I'm already flying and have been a few years, I am very familiar with the salary and loan payments struggle. I went to an expensive academy and then trained those who were smarter and more hard working than I; and I regret spending some serious dough. Be glad your parents aren't willing to co-sign.

My advice is do not go where you have to take out a loan for that much! I doubt (without having read about their program) that you'll be all set and done at only $50k.

Pilot finance is a pain...but they teach you a valuable lesson..which is not to get into debt you can just barely handle now and will choke you in a few years. Ask me how I know...
They make you pay them back ASAP, and you'll be less indebted when you start working as a pilot.

Seek much cheaper financing (avoid it if at all possible) or just take your time and pay it out of pocket as you go. There is no rush. There will always be some kind of job out there and you still have quite a bit of flying to do before you get your chance at a decent paying job. Calculate your loan payments, then budget for them with the expected income of a CFI (takes a lot to make $2,000 after taxes), then do that for every year you will be a CFI and every year you may spend at a regional (reference the pay scales here on apc), include your living expenses like rent, food, gas, insurance, bar tabs, and you will get an idea of what you're going to get into. Then think of how you want to live when you're all grown up, have your commercial, are working your way up and start wanting a nice place, a family, toys, and on and on. Not to kill your hopes, but really think twice man...financial hardship isn't worth it. Take your time, pay it off, and you'll be happier as you work your way up while flying. Trust me...

I don't want to divulge my life story here but if you have questions about what it's like, feel free to send me a message.

I hope you find a way to make your dream a reality.