People with ADHD can pursue any career they want. I don't think either one of those choices is more advantageous than the other. An ADHD person can choose whichever one he/she wants. People with this disorder just mentally function differently than people without the disorder.
Don't join the military, You will be sorry. Work a job for a while and gain some strength doing that for a little but. then you will discover how good you will do in college. Go do a trade if you don't want to get a solid education. Go be a cna.