My two cents is this:
I learned everything I know about sound design and recording/editing sound effects by just doing it and reading Designing Sound religiously, asking a ton of questions on this site, and reading the blog of many great professional sound designers.
If there is anything you don't feel certain about that you know you will learn from going to a film school like the one you mentioned, go for it. But, I think you can absolutely get to where you want to go without going through school and learning on the job and from your peers.
I do know that those who have gone to film school that I work with each tell me film school was not worth it for them, that they feel like if they were just to work on projects and learn on the job they would have learned what they did in school - not one person I know who has gone to film school has told me "it is imperative that you go to film school - you will not make it in this industry if you don't!". That's an interesting statistic, I think.
But, ultimately it's your choice. No-one can make it for you. If you feel film school is right for you, go for it! It's your road map to draw and follow!