I did my A&P at NAIA in South Carolina, a 2 week course designed for experienced mechanics. All of the revision was on a one to one basis with the instructor, so you only brush up what you need too (eg in my case piston engines and FARs). You sit the exams on the second week and do your Oral and Prctical with the DME on the last two days. You still need all of the documents for the FAA. They have a website. NAIASC.net.