Don't make this too difficult, see an officer recruiter and tell him your goals. He'll set up the exams and the physical. Until you get turned , if you do, then start pursuing the docs, the waivers, etc. The biggest problem some of my candidates was color vision--it's a tough test. Even Australian pilot candidates have trouble passing the RAAF test.
Yes, AD is an option, but you will have no control over assignment afte UPT, perhaps even if you are number one in your class.