you are what you make yourself.
If you're proactive during your time, and make an effort to apply the theory/skills you learn at AIM in the real world (i.e. through voluntary internships and work experience), then you'll have connections/working skills to further yourself.
I have many audio friends who are doing really well after AIM, but these are students who took every opportunity to record other students, interned at studios, etc etc...
However, with the performance degree, yes it's a good idea to know your theory and be in an environment where you're constantly required to perform, but you can't rely on a degree to get you a job. Bear in mind that the degree is two years (you may make this as flexible as you like and defer subjects)... if you choose performance, there is alot you have to learn at a rather intense pace. You need to be proactive with your studies and be constantly applying yourself to succeed.
I'd recommend the more "behind the scenes" courses than the performance degrees i.e. audio, arts management, composition.