Have you taken a discovery flight at your local airport? Before you sign your life away with ATP (or any other big $ flight school), take a few lessons.

I had a former FA as a student. This was at one of the big $ flight schools. Long story short, she wasn't able to solo in the allotted timeframe and was let go from the program. Based on the costs that they quote if you aren't able to complete the program, she spent a lot of money for basically nothing.

A other thing to consider, are you a quick learner? If not, then an accelerated program would not work for you. With those programs (anybody quoting you 9 months to get all your certificates is talking about an accelerated program), you have to be able to commit to flying and studying all day, every day.

I wish you the best of luck, but don't let a salesperson convince you that anybody can become an airline pilot. My first day of an accelerated private pilot ground school, the chief flight instructor walked in and told us that one out of the five of us wouldn't get through the private pilot course. Well he was wrong. Two out of five didn't make it.

I highly recommend you get your private pilot certificate at your local FBO and then see if you still want to pursue your other certificates and ratings.

Good luck!