[QUOTE
The education opportunities are pretty much standard for all branches. However, it's kind of hard to go to school if you spend a lot of time deployed to the desert or out on training exercises. My opinion is the AF is as close to a 9-5 job as you can get and still be in the military[/QUOTE]

Yes, the AF is affectionately called "the chair force" by the other branches.
I think the AF or Navy are better choices if you want to stay healthy and
learn something that is useful in civilian life.

Added: why not apply for NROTC, you get education paid for + allowance, go in as a officer and you still have the Marine option.
http://www.navy.com/navy/joining/education-opportunities/nrotc/?campaign=search_Reprise/Google/NRO