Getting FT is like scholarships, you will go to a board and get a WCS from there they draw the line. Above and you go, below and you don't.
Right now nobody can tell you your chances because nobody knows if next yr will have more or less slots than this yr. This yr was incredibly competitive. If it was 2 yrs ago, I would say you have a 50-50 shot because the avg gpa for non-techs were 3.2+, this yr it was higher.
Also realize that some schools have a better history of getting their cadets in than others. For ex: ERAU and VT traditionally beat the % for the national rate, and usually by a lot. I believe this yr VT had over 60-65% compared to under 50% nationally. There was one poster that said their school only had 35%. DS's was the national avg.
Clarkson is correct talk to your det. They will be honest re:your chances and what to do to improve them. If you feel uncomfortable about approaching the leadership, most dets. have mentors assigned to C100's, go to your mentor. They can speak from their own recent experience and what was in their packet since mentors are usually C300's. Not only that, but they are usually in the cadet chain of command, thus, their perspective is from the whole cadre overview. FCC's have meetings, they write evaluations, they can see who made it this yr, and use them as a comparison. They will not name cadets as in well Cadet Jones was like you or Cadet Smith had this. They will just do generalizations saying the ones who got it compared to those who didn't had X, Y, and Z in their file.
Have you held any det jobs? Do you know if you will next fall? Any awards?
This will not only be important for SFT, but also when it comes time for your AFSC since you will go through another board process at that time too.
If I am correct they now give the AFOQT to 200's instead of 100's. If that is right, spend the time and study for it because that will be a part of your score.
DS is a non-tech major and he got it, he also got UPT, so as much as it may appear they only give to tech majors they do give to non-techs! It is they just expect non-techs to have a higher gpa.
Finally, I think you are going to need to choose between AAS and Drill. Believe it or not both are time consuming and there maybe a time (as in when it is held) confliction. This occurs because they hold their meetings after hours. AAS also does, at least our DS's does community service. So it is not only pledging, meetings, but community service that will take up your life on top of ROTC which is on top of academics. If you tried to do both you really could be spreading yourself too thin. What will happen? Something is going to suffer and you need to make sure it is not ROTC or grades.
Good luck. Do your best and people will notice. They will go to bat for you.
OBTW, there is an actual formula that they use to determine the WCS. Ask the det., they will tell you. If I recall correctly the biggest % is the commander's input, but I might be confusing that with AFSC. AFSC and SFT boards have different formula's and weights.