When I say friends I do mean AF officers. Similar to a pilot walking in an application to an airline. A letter from other "friends," pilots are very good too. As has been said here many times, don't worry about your grades. Tell them how busy you were doing other activities/working. As far as being married, of course not. They will ask if she minds you "traveling" (gone for long trips).
You'll love flying the C-5, you'll see the world, and not from some dusty airstrip. The C-5 only goes into large airports.
Good Luck, we're all counting on you.