You definitely need to talk with some people who are "in" right now. You are talking about decisions that no one else can make for you. These decisions affect you for the rest of your life. LOTS of things are changing in the military right now and will be changing for the next few years. There is a MAJOR difference in "possibly going in the Air Force and joining 1st SFOD-D". Much like Greenl.A. said - That lifestyle takes a major commitment.
One GREAT thing for you is that you are young enough that whatever you decide to do - you have time to make mistakes - LEARN from them - adapt - and overcome any obsticle that you encounter.
Whatever you decide to do - put everything that you have into it and be the best that you can possibly be at it!
BEST of luck!