I'm an American, so I don't know how Canadian higher education works. Both of these schools look like they're a bit better than an American community college.
I looked at he Conestoga website and didn't find your associates degree program:
I think I found the one for centennial:
Transferring courses is difficult in America, each university is trying to collect your $$$, so many of your associates degree courses will not be transferrable to your bachelors degree. Call the office of the computer science department at York University and talk to someone about your ideas, plans and questions, they usually aren't busy and may be able to give you a list of transferrable units.
Remember, computer science is in the engineering department, they want you to build skyscrapers when you may only want to code games and toys, so they really try to kill game programmers in the math department after Calculus 1. Also, none of the computer science classes will have time to teach you how to use a debugger or a call stack, so you should familiarize yourself with one that has a GUI and one that is command line.