if you still want the college atmosphere, you can enroll in ROTC. you go to college, attend classes, and in the summer months, you'll train with the military. it usually is less stressful then going to an academy. but, when you graduate college, and complete training, you'll serve active duty as an officer for at least five years.
but, through the ROTC, it is a scholarship sponsored by the military to help pay for college, similar to getting into the academy. any counselor at your school should have info on ROTC colleges near you.
otherwise, just enlist in the military with your high school diploma after graduation, serve four years, then use the GI Bill to help pay for college. you'd attend basic training for around nine weeks, and train and earn job experience. it doesn't have to be a combat job, as they have IT, health care, business, logistics, intel, security, vehicle maintenance, and other jobs you could get. depending on the job and experience you'd earn, you may not need a college degree to get a decent job after your service is done if you find something similar.
you could still go to college though after your four to six years of enlistment, and use the GI Bill to help pay for most, if not all for it. the user - Wine Wine, used his GI bill and earned a couple of degrees.
I would implore all options to help pay for college instead of just looking into the academies. then decide before you choose something you may regret.