Hey man, CONGRATS! I went in the Air Force when I was 21 (older than most) and stayed for 6-years. It was THE best career decision I ever made. I made other decisions during that time that really helped me out in the long run.
Keep in mind that even though the Air Force Basic Training is probably the easiest of all the branches (I think it's changed to be harder physically, though), it's still very stressful. There's still tons of pressure. I don't care who you are or how prepared you are, you will absolutely lay in bed that first week and ask yourself why in the hell you did this. I've seen big tough grown men break down crying when they called their family for the first time (after a week or so.) It's the stress.
After a week or two, you get into the groove and even though it sucks, it's no longer a huge deal. It also feels like you're there for 10 years, but it's really only weeks (how long is it now?) And if you ever question why the heck you did this, just think about the future. The rest of the Air Force is NOTHING like Basic Training, so the grass is absolutely greener on the other side.
As other said, don't raise your hand or even talk in Basic Training unless you're spoken to first. They will ask who has drivers license and those that raise their hand will get trash duty or something crazy like that. lol! Just sit there quietly and don't do a thing but what you're told. Also, do EXACTLY as you're told. NO MORE! That's a test. They want you to follow directions EXACTLY. Don't think "I'm sure he meant this too" or anything like that. lol! It's a TARP!
Absolutely go into a job that translates to skills on the outside. My advice? Go into anything related to Information Technology. No, it's not cool like the jobs you mentioned. But believe me, there's tons of money to be made in the IT fields and you will set yourself up very well in the future if you go that route. Really...
The military is a great experience for everyone. I think you made a great decision! And no matter what the tough guys in the other branches say, you'll be VERY happy you joined the AIR FORCE after you see the crap they go through. Everything is better in the Air Force UNLESS you want to kill people. lol... The food is better, the dorms are better, the bases are nicer, the living conditions even in wartime are better, etc, etc, etc...
But yeah, if you want to crawl through mud, learn hand-to-hand combat, and kill people, go elsewhere. If you want to be taken care of, join the AF.
Also, I think that "Tactical Air Command and Control" used to be called "TAC-P" or something. That's alot of physical training, similar to special forces stuff. I think so anyway. So if you're not into that stuff, don't go that route.
Keep in mind that I was in from Jan 1994 to Dec 1999, so things could have changed alot since then.
But anyway, GOOD LUCK AND GREAT DECISION!!!!