ur first question i have no idea about lol.

and ur second thing..about serving so many years...you do the rotc however long you're in college. usually people sign up their freshmen year but they still allow new signups sophomore year as well. and when you're done with that hopefully you go into upt...not the academy. see what you want is to go into upt. 3 ways to do that basically.....

1. go to the academy...graduate and get a slot.
2. go to college and enroll in rotc while you're there and get a slot.
3. go to college, get a technical degree, go into officer training school after you graduate and then hope to get a spot after that.

so if you do rotc hopeflly you now see that its unnecessary to go into the academy afterwards.

questions like height and vision can be found on the faq here... http://airforce.custhelp.com/cgi-bin/airforce.cfg/php/enduser/std_alp.php?p_sid=j_ojS-Oh&p_lva=&p_sp=&p_li=