Sounds Like your Instructor was "blowin smoke" to get you to sign up.
If you want to fly, do it. You can shop around and depending on what you want out of flying, adjust your training accordingly. Some want to make it a career, others just for a hobby. Some have tons of money, the rest of us are broke.
Dont jump into ANY contracts until your sure. They have a tendancy to bite you in the ass if for some reason you dont want to continue.
www.aopa.org may have some legal advice on contracts. I personally think that if you want to fly, put some money on the books, fly it off, then put some more. That way they have an incentive to keep you around.
Another thing you dont want to get caught in is doing some training,then laying off for a period. Its sort of like taking one step forward and two back. It also costs you more money. Try and get things done in as short of a period of time as you can.
Good Luck.