RJM
If I were in your shoes and a had 150K in debt and no way to pay it back I'd seriously look at bankruptcy. Get it over while you are young and start rebuilding your credit now. Unless you are not telling us something like your parents are rich. You are already in a smoking financial hole that you will never dig out of in the aviation industry. Not with entry level jobs and you are YEARS away from getting any kind of flying job that will support that kind of debt. And even after you do get hired by a "real" airline it'll take five or six years to get to the pay level you'll need to be at just to survive with that monkey on your back.
The sooner you realize just how screwed you are the quicker you can start with your damage control.