Generally I would recommend a 4 year degree if you are going to spend the money because that will leave you more options if things don't work out as an audio engineer (which it doesn't for many people) or if you decide you don't like working 80 hour weeks for mediocre money. Most of the guys I know who got music or recording degrees are doing something else 8 years later.
McGill, MTSU, NYU, Berklee and Miami have the best regarded 4 year programs but there are others as well.
If you want to go to Berklee and you can get in and pay for it go to Berklee. I've known several guys to go there and none were prodigies. They did come out with well respected degrees and an excellent alumni base to help them get employment.
It is imperative not to underestimate the value of networking. All the skills in the world don't matter if the only thing on your resume is a degree. You have to have a way to get get in the door.
Here is something else. If what you really want to be is a rockstar, focus on that. Alot of guys get into recording b/c of music without any real interest in sitting in a dark room recording someone elses stuff for 12 hours a day. You can learn how to make killer demos right here rather than spending a bunch $ on a very competitive, low pay career you don't even actually want.