Couple of points.
Under no circumstances do you want to walk into a recruiting office with a 70ish gt score. You will be cannon fodder for the recruiter. Meaning, you will have three or four options and they will include cook. Study study study. If you have a 110 or higher as stated above you are free to pick better jobs.
Secondly, I would look into the reserve units in your area. You have to be able to get to them and sometimes they are not the kinds of units that may interest you.
Thirdly, get the army to train you in a career you can apply in the civilian world.
Who am I, currently sitting at 20 years in. I started as a private in the airborne infantry. I did that because it is the family business as it were. It is tough to say I would go back and do things differently but I am also in a different place in my life. When I was young there was nothin cooler than a 141 mass tac and a live fire. I have been very fortunate to have gone on to being an officer and to further get into the engineering career field so now I actually have some skills that are applicable to the outside world.
What all this means. I know you are young. But, you have to take a brief glimpse of yourself ten years from now. Do you want to have a degree? Do you think you might want a family? Why the reserves vs active vs guard? What would you enjoy doing as a profession? I have always joked that I should have signed up to be an X-ray tech.....
A an rate, thanks for considering the military and remember that it is your butt not the recruiters.